JP2008542533A - Aluminum casting alloy and method for producing the same - Google Patents
Aluminum casting alloy and method for producing the same Download PDFInfo
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 81
- 239000000956 alloy Substances 0.000 title claims abstract description 81
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000005266 casting Methods 0.000 title claims description 41
- 239000012535 impurity Substances 0.000 claims abstract description 24
- 229910052709 silver Inorganic materials 0.000 claims abstract description 18
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 15
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 15
- 229910052796 boron Inorganic materials 0.000 claims abstract description 14
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 14
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000011701 zinc Substances 0.000 claims description 16
- 229910000838 Al alloy Inorganic materials 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims 5
- 239000010936 titanium Substances 0.000 claims 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 2
- 239000000203 mixture Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 8
- 238000005495 investment casting Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910000861 Mg alloy Inorganic materials 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910018571 Al—Zn—Mg Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910019015 Mg-Ag Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Continuous Casting (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Abstract
【課題】アルミニウム鋳造合金及びその製造方法において、良好な機械的性質を達成することにある。
【解決手段】アルミニウム鋳造合金は、重量％で、約４〜約５％Ｚｎ、約１〜約３％Ｍｇ、約１％以下Ｃｕ、約０．３％未満Ｓｉ、約０．１２％未満Ｆｅ、約０．５％未満Ｍｎ、約０．０１〜約０．０５重量％Ｂ、約０．１５％未満Ｔｉ、約０．０５〜約０．２％Ｚｒ、約０．１〜約０．５％Ａｇ、多種多様な元素または不純物のそれぞれが０．０５％以下、多種多様な元素または不純物の合計が０．１５％以下、残部アルミニウム、からなる。この合金は、質別Ｔ５または質別Ｔ６で有利に使用することができる。
【選択図】図１
An object of the present invention is to achieve good mechanical properties in an aluminum cast alloy and a method for producing the same.
An aluminum cast alloy comprises, by weight, about 4 to about 5% Zn, about 1 to about 3% Mg, about 1% or less Cu, less than about 0.3% Si, less than about 0.12% Fe. Less than about 0.5% Mn, about 0.01 to about 0.05 wt% B, less than about 0.15% Ti, about 0.05 to about 0.2% Zr, about 0.1 to about 0. 5% Ag, each of various elements or impurities is 0.05% or less, the total of various elements or impurities is 0.15% or less, and the balance is aluminum. This alloy can advantageously be used in grade T5 or grade T6.
[Selection] Figure 1
Description
本発明は、アルミニウム鋳造合金及びその製造方法に係り、特に航空宇宙産業および自動車産業における鋳造品用のＡｌ−Ｚｎ−Ｍｇ−Ａｇ高強度合金としてのアルミニウム鋳造合金及びその製造方法に関するものである。 The present invention relates to an aluminum cast alloy and a method for producing the same, and more particularly to an aluminum cast alloy as an Al-Zn-Mg-Ag high strength alloy for castings in the aerospace industry and the automobile industry, and a method for producing the same.
本願は、２００５年５月２５日に出願された米国特許仮出願第６０／６８４，５１３号による優先権を主張するものである。 This application claims priority from US Provisional Application No. 60 / 684,513, filed May 25, 2005.
アルミニウム鋳造部品は、軽量化のため航空宇宙産業で広く使用されている。最もよく使われる鋳造合金であるＡｌ−Ｓｉ７−Ｍｇは、強度限界が高められている。現在のところ、最もよく使われる鋳造合金であるＡｌ−Ｓｉ７−Ｍｇの鋳造材料Ａ３５６．０は、２９０ＭＰａの極限引張強さ、８％以上の伸長度で２２０ＭＰａの引張降伏強さを信頼性をもって達成できる。Ａｌ−Ｓｉ７−Ｍｇ型の高強度Ｄ３５７合金は、３５０ＭＰａの極限引張強さ、５％以上の伸長度で２８０ＭＰａの引張降伏強さを信頼性をもって達成できる。 Cast aluminum parts are widely used in the aerospace industry for weight reduction. Al-Si7-Mg, the most commonly used casting alloy, has an increased strength limit. At present, Al-Si7-Mg casting material A356.0, the most commonly used casting alloy, reliably achieves ultimate tensile strength of 290MPa and tensile yield strength of 220MPa with an elongation of 8% or more. it can. The Al-Si7-Mg type high strength D357 alloy can reliably achieve an ultimate tensile strength of 350 MPa and a tensile yield strength of 280 MPa with an elongation of 5% or more.
ところが、従来、上記のＡｌ−Ｓｉ７−Ｍｇ合金において、部品を軽量化するためには、設計上の物質特性を達成しつつより高強度の物質が必要となる。様々なアルミニウム合金、主として鍛錬用合金は、より高い強度を示している。これらの合金を鋳造品に適用すると、凝固時に熱間亀裂が生じるという傾向があった。熱間亀裂は、応力および歪みにより生じる、肉眼で見える鋳造品の亀裂であって、非平衡性固相線を越えた温度での冷却時により起こる。この熱間亀裂のため、多くの場合、鋳造品に対して加工処理を行うことはできない。したがって、これらの鍛錬用合金は、鋳造合金としての使用に適するものではない。 However, conventionally, in the above Al-Si7-Mg alloy, in order to reduce the weight of the component, a material having higher strength is required while achieving design material properties. Various aluminum alloys, primarily wrought alloys, exhibit higher strength. When these alloys were applied to castings, there was a tendency for hot cracks to occur during solidification. Hot cracks are cracks in the casting that are visible to the naked eye caused by stress and strain, and are caused by cooling at temperatures beyond the non-equilibrium solidus. Due to this hot crack, in many cases, it is not possible to process the cast. Therefore, these wrought alloys are not suitable for use as casting alloys.
また、Ａｌ−Ｓｉ７−Ｍｇ合金を使用することに伴うコストは、溶体化処理（ＳＨＴ）に関するものである。溶体化処理を行うには、高価な装置が必要となり、動作時および制御時の問題源となることが多く、動作制御および試験運転のコスト増を生じ、溶体化処理時に部品変形の可能性を生じさせる。溶体化処理は、通常は最高強度となるために必要であるものの、これはコストや動作時の不利益がある処理である。 The cost associated with using an Al-Si7-Mg alloy is related to solution treatment (SHT). In order to perform solution treatment, expensive equipment is required, which often becomes a source of problems during operation and control, resulting in increased costs for operation control and test operation, and the possibility of component deformation during solution treatment. Cause it to occur. Although the solution treatment is usually necessary to obtain the highest strength, this is a treatment with costs and disadvantages during operation.
更に、十分な機械的性質を達成するための溶体化処理および急冷（クエンチ）を不要とすることは、航空宇宙産業や自動車産業において利益がある。目標の構成部品の最少壁厚さは、１．５ｍｍである。溶体化処理および急冷を行うと、製品コストが増加するだけでなく、溶体化処理温度でのクリープおよび急冷時の残留応力による歪みが生じる。大型で複雑な部品の歪みの修復は不可能ではないものの、非常に困難である。したがって、Ｔ５テンパー（質別Ｔ５）と呼ばれる人工的なエージング処理に使用することができる合金が望ましい。 Furthermore, the elimination of solution treatment and quenching (quenching) to achieve sufficient mechanical properties is beneficial in the aerospace and automotive industries. The minimum wall thickness of the target component is 1.5 mm. When solution treatment and rapid cooling are performed, not only the product cost increases, but also distortion due to creep at the solution treatment temperature and residual stress during rapid cooling occurs. Repairing distortions in large and complex parts is difficult but not impossible. Therefore, an alloy that can be used for artificial aging treatment called T5 temper (quality grade T5) is desirable.
そこで、本発明は、インベストメント、低圧または重力の永久的または半永久的な鋳型、スクイーズ、高圧ダイまたは砂型の鋳造に用いられるＡｌ−Ｚｎ−Ｍｇ系合金に関するものであって、以下の重量％による組成範囲を有するものである。
Ｚｎ：約４〜約５％、
Ｍｇ：約１〜約３％、
Ｇｕ：約１％以下、
Ｓｉ：約０．３％未満、
Ｆｅ：約０．１２％未満、
Ｍｎ：約０．５％未満、
Ｂ：約０．０１〜約０．０５％、
Ｔｉ：約０．１５％未満、
Ｚｒ：約０．０５〜約０．２％、
Ａｇ：約０．１〜約０．５％、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
Ａｌ：残部。
そして、本発明では、使用される合金は、Ｔ５テンパーまたはＴ６テンパーである。Ｔ５状態における物質により、Ａ３５６．０−Ｔ６で期待されるものよりも良好な機械的性質を達成でき、これはＤ３５７−Ｔ６合金の機械的性質に近いものである。Ｔ６状態では、、Ｄ３５７−Ｔ６の高強度合金のものよりも良好な機械的性質を達成できる。
Accordingly, the present invention relates to an Al-Zn-Mg alloy used for casting of investment, low-pressure or gravity permanent or semi-permanent molds, squeeze, high-pressure die or sand mold, and the composition according to the following weight percent: It has a range.
Zn: about 4 to about 5%,
Mg: about 1 to about 3%,
Gu: about 1% or less,
Si: less than about 0.3%,
Fe: less than about 0.12%,
Mn: less than about 0.5%,
B: about 0.01 to about 0.05%,
Ti: less than about 0.15%,
Zr: about 0.05 to about 0.2%,
Ag: about 0.1 to about 0.5%,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
Al: remainder.
In the present invention, the alloy used is T5 temper or T6 temper. The material in the T5 state can achieve better mechanical properties than expected with A356.0-T6, which is close to the mechanical properties of the D357-T6 alloy. In the T6 state, better mechanical properties can be achieved than that of the high strength alloy D357-T6.
本発明は、一態様においては、重量％で示される以下からなるアルミニウム鋳造合金に関するものである。
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％以下Ｃｕ、
約０．３％未満Ｓｉ、
０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウム。
また、別の態様において、本発明は、アルミニウム合金鋳造品の製造方法に関するものであって、この方法は、アルミニウム合金溶融物を準備するステップからなり、ここで前記溶融物は、
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％以下Ｃｕ、
約０．３％未満Ｓｉ、
０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウムからなる濃度の元素を含有しており、
さらに、前記方法は、前記鋳造品を形成するよう形状構成した鋳型に前記溶融物の少なくとも一部を投入するステップと、
前記鋳型から前記鋳造品を取り出すステップとからなる。
さらに、別の態様において、本発明は、アルミニウム合金鋳造品に関するものであり、以下の濃度の元素を含有している。
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％Ｃｕ、
約０．３％未満Ｓｉ、
０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウム。
In one aspect, the present invention relates to an aluminum casting alloy comprising the following expressed in weight percent.
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% or less Cu,
Less than about 0.3% Si,
Fe less than 0.12%,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
The balance aluminum.
In another aspect, the present invention relates to a method for producing an aluminum alloy casting, the method comprising the step of preparing an aluminum alloy melt, wherein the melt comprises:
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% or less Cu,
Less than about 0.3% Si,
Fe less than 0.12%,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
Contains the concentration of the remaining aluminum,
Further, the method includes the step of charging at least a portion of the melt into a mold configured to form the cast article;
And taking out the casting from the mold.
Furthermore, in another aspect, the present invention relates to an aluminum alloy casting, and contains the following concentrations of elements.
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% Cu,
Less than about 0.3% Si,
Fe less than 0.12%,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
The balance aluminum.
本発明のアルミニウム鋳造合金及びその製造方法は、良好な機械的性質を達成することにある。 The aluminum cast alloy and the method for producing the same of the present invention is to achieve good mechanical properties.
本発明は、良好な機械的性質を達成する目的を、上記のように各種成分を選定して実現するものである。
以下、図面に基づいてこの発明の実施例を詳細且つ具体的に説明する。
The present invention achieves the object of achieving good mechanical properties by selecting various components as described above.
Hereinafter, embodiments of the present invention will be described in detail and specifically based on the drawings.
図１〜図４は、本発明に係るアルミニウム鋳造合金及びその製造方法の実施例を示すものである。
図１は、低冷却速度（０．３℃／秒）で凝固させた様々な合金サンプルについてのＴ５機械的性質を示している。
図２は、低冷却速度（０．３℃／秒）で凝固させた様々な合金サンプルについてのＴ６機械的性質を示している。
図３は、Ａｌ−４．５Ｚｎ−１．２Ｍｇ合金のＴ５機械的性質と比較した、様々な合金についてのＴ５機械的性質を示している。
図４は、Ａｌ−４．５Ｚｎ−１．２Ｍｇ合金のＴ６機械的性質と比較した、様々な合金についてのＴ６機械的性質を示している。
1 to 4 show an embodiment of an aluminum casting alloy and a manufacturing method thereof according to the present invention.
FIG. 1 shows T5 mechanical properties for various alloy samples solidified at a low cooling rate (0.3 ° C./sec).
FIG. 2 shows T6 mechanical properties for various alloy samples solidified at a low cooling rate (0.3 ° C./sec).
FIG. 3 shows the T5 mechanical properties for various alloys compared to the T5 mechanical properties of the Al-4.5Zn-1.2Mg alloy.
FIG. 4 shows the T6 mechanical properties for various alloys compared to the T6 mechanical properties of the Al-4.5Zn-1.2Mg alloy.
本発明に係る合金鋳造法および鋳造後の処理方法は、実験室規模で評価した。機械的性質を評価するため、これらの合金を方向性凝固（ＤＳ）の鋳型に投入した。方向性凝固鋳型からの鋳造品は、様々な凝固速度で凝固した種々の断面において微細構造を有していた。Ｔ５およびＴ６の状態で、鋳造品に対し熱処理を行った。引張性質を評価した。表１は、試験を行ったアルミニウム合金組成を重量％で示している。Ａｌは残部である。銀を含有する合金は、本発明によるものである。比較するため、その他の合金は表および図面に示されている。 The alloy casting method and the processing method after casting according to the present invention were evaluated on a laboratory scale. In order to evaluate the mechanical properties, these alloys were put into directional solidification (DS) molds. Castings from directional solidification molds had microstructures in various cross sections solidified at various solidification rates. The cast product was heat-treated in the state of T5 and T6. Tensile properties were evaluated. Table 1 shows the aluminum alloy composition tested in weight percent. Al is the balance. The alloy containing silver is according to the invention. For comparison, other alloys are shown in the tables and drawings.
表２は、低冷却速度（０．３℃／秒）でのＡｌ−４．５Ｚｎ−１．２Ｍｇ合金のＴ５およびＴ６性質に対する様々な合金元素の影響を示したものである。図１は、Ｔ５状態における様々な組成についての機械的性質を表すものであり、Ｔ６状態における機械的性質は図２に示されている。 Table 2 shows the effect of various alloying elements on the T5 and T6 properties of Al-4.5Zn-1.2Mg alloys at low cooling rates (0.3 ° C / sec). FIG. 1 represents the mechanical properties for various compositions in the T5 state, and the mechanical properties in the T6 state are shown in FIG.
この表２における機械的性質が最良のものは、表１における４番目、６番目、および７番目（Ａ３、Ａ５、Ａ６）の合金であることが注目される。これらの合金は、全て銀を含有しており、その組成は本発明の組成範囲内にある。 It is noted that the best mechanical properties in Table 2 are the fourth, sixth and seventh (A3, A5, A6) alloys in Table 1. All of these alloys contain silver and the composition is within the composition range of the present invention.
Ｔ５の熱処理を行った合金の結果は図１に示されており、またＴ６の熱処理を行った合金の結果は図２に示されている。全てのケースで４．５％である亜鉛の濃度は、これらの図面の横軸記号で省略されている。 The results for the alloy with the T5 heat treatment are shown in FIG. 1, and the results for the alloy with the T6 heat treatment are shown in FIG. The zinc concentration, which is 4.5% in all cases, is omitted from the horizontal axis symbols in these drawings.
図１に示されるように、Ｔ５テンパーにおける引張降伏強さ（ＴＹＳ）、極限引張強さ（ＵＴＳ）および伸長度（Ｅ）の最も高いものは、Ａｌ−４．５％Ｚｎ−１．５％Ｍｇ−０．３％Ａｇの合金で得られたことが分かる。その次に高いものは、Ａｌ−４．５％Ｚｎ−１．２％Ｍｇ−０．３％Ａｇの合金で得られた。これらの合金は、本発明の組成範囲内にある。 As shown in FIG. 1, the highest tensile yield strength (TYS), ultimate tensile strength (UTS), and elongation (E) in T5 temper are Al-4.5% Zn-1.5%. It can be seen that it was obtained with an alloy of Mg-0.3% Ag. The next highest was obtained with an alloy of Al-4.5% Zn-1.2% Mg-0.3% Ag. These alloys are within the compositional range of the present invention.
図２に示されるように、Ｔ６テンパーにおける降伏強さおよび極限引張強さの最も高いものは、前段落に記載の本発明の合金で得られたことが分かる。ただし、より大きな伸長度は、Ａｌ−４．５％Ｚｎ−１．２％Ｍｇ−０．４％Ｓｉの合金で得られた。 As shown in FIG. 2, it can be seen that the highest yield strength and ultimate tensile strength in the T6 temper was obtained with the inventive alloy described in the previous paragraph. However, a greater degree of elongation was obtained with an alloy of Al-4.5% Zn-1.2% Mg-0.4% Si.
図３は、Ａｌ−４．５％Ｚｎ−１．２％Ｍｇの合金による値と比較した、様々な合金の引張降伏強さ、極限引張強さおよび伸長度を示している。Ｔ５テンパー後のサンプルにつきその値が示されている。横軸は、Ａｌ−４．５％Ｚｎ−１．２％Ｍｇの合金による値と比較した、引用値の増減（負は減少）を示している。例えば、Ａｌ−４．５％Ｚｎ−１．５％Ｍｇ−０．３％Ａｇ−０．１３％Ｚｒの合金の極限引張強さは、Ａｌ−４．５％Ｚｎ−１．２％Ｍｇ合金の対応値よりも高くなっている。 FIG. 3 shows the tensile yield strength, ultimate tensile strength and elongation of various alloys compared to the values for the Al-4.5% Zn-1.2% Mg alloy. The value is shown for the sample after T5 temper. The horizontal axis shows the increase (decrease in negative value) of the quoted value compared to the value for the alloy of Al-4.5% Zn-1.2% Mg. For example, the ultimate tensile strength of an alloy of Al-4.5% Zn-1.5% Mg-0.3% Ag-0.13% Zr is Al-4.5% Zn-1.2% Mg alloy. It is higher than the corresponding value.
図４は、Ｔ６テンパー後の様々な合金についての同様のデータを示している。 FIG. 4 shows similar data for various alloys after T6 temper.
さらに、本発明による以下の組成からなる合金および「対照」合金を用いてインベストメント鋳造によるテストが行われた。本発明による合金の組成は、重量％で、０．０７％Ｓｉ、０．０５％Ｆｅ、０．３０％Ｃｕ、０．０４％Ｍｎ、１．６１％Ｍｇ、４．１７％Ｚｎ、０．１４％Ｔｉ、０．０１８％Ｂ、０．１３％Ｚｒ、０．３％Ａｇ、および残部Ａｌからなる。また、対照合金の組成は、重量％で、０．０４％Ｓｉ、０．０５％Ｆｅ、０．２９％Ｃｕ、０．０４％Ｍｎ、１．７５％Ｍｇ、４．２１％Ｚｎ、０．１４％Ｔｉ、０．０２３％Ｂ、０．１３％Ｚｒ、０％Ａｇ、および残部Ａｌからなる。本発明の合金および対照合金は、それぞれ同様の状況下において合金組成を有する２つの鋳造物を製造するインベストメント鋳造が行われ（溶融金属温度が７４０℃、鋳型温度が８００℃であり、ソフィア法を使用して空冷した）、それからインベストメント鋳造品に対しＴ６テンパーまで加熱処理を行った。 In addition, investment casting tests were carried out using an alloy of the following composition according to the present invention and a “control” alloy. The composition of the alloy according to the present invention is 0.07% Si, 0.05% Fe, 0.30% Cu, 0.04% Mn, 1.61% Mg, 4.17% Zn,. 14% Ti, 0.018% B, 0.13% Zr, 0.3% Ag, and the balance Al. The composition of the control alloy was 0.04% Si, 0.05% Fe, 0.29% Cu, 0.04% Mn, 1.75% Mg, 4.21% Zn, 0.2% by weight. It consists of 14% Ti, 0.023% B, 0.13% Zr, 0% Ag, and the balance Al. The alloy of the present invention and the control alloy were investment cast to produce two castings having the same alloy composition under similar conditions (the molten metal temperature was 740 ° C., the mold temperature was 800 ° C., and the Sofia method was used). Then, the investment casting was heat-treated to T6 temper.
Ｔ６テンパー状態において、本発明の合金によるインベストメント鋳造品は、以下の機械的性質を示した：
鋳造品第１号−引張降伏強さ（ＴＹＳ）５５．１（ｋｓｉ）、極限引張強さ（ＵＴＳ）６１．１（ｋｓｉ）、伸長度（Ｅ）１２％。
鋳造品第２号−引張降伏強さ（ＴＹＳ）５４．５（ｋｓｉ）、極限引張強さ（ＵＴＳ）６０．２（ｋｓｉ）、伸長度（Ｅ）１０％。
In the T6 temper state, investment castings with the alloys of the present invention exhibited the following mechanical properties:
Casting product No. 1-tensile yield strength (TYS) 55.1 (ksi), ultimate tensile strength (UTS) 61.1 (ksi), elongation (E) 12%.
Casting product No. 2-Tensile yield strength (TYS) 54.5 (ksi), ultimate tensile strength (UTS) 60.2 (ksi), elongation (E) 10%.
対照合金によるインベストメント鋳造品は、以下の機械的性質を示した：
鋳造品第１号−引張降伏強さ（ＴＹＳ）５１．５（ｋｓｉ）、極限引張強さ（ＵＴＳ）５７．８（ｋｓｉ）、伸長度（Ｅ）９％。
鋳造品第２号−引張降伏強さ（ＴＹＳ）４９．８（ｋｓｉ）、極限引張強さ（ＵＴＳ）５６．１（ｋｓｉ）、伸長度（Ｅ）９％。
Investment castings with the control alloy showed the following mechanical properties:
Casting product No. 1-tensile yield strength (TYS) 51.5 (ksi), ultimate tensile strength (UTS) 57.8 (ksi), elongation (E) 9%.
Casting product No. 2—Tensile yield strength (TYS) 49.8 (ksi), ultimate tensile strength (UTS) 56.1 (ksi), elongation (E) 9%.
本発明の合金によるインベストメント鋳造品は強度および伸長度がより高く、本発明の合金にＡｇが介在する利益があることは明らかである。 It is clear that investment castings with the alloys of the present invention have higher strength and elongation, and have the benefit of Ag intervening in the alloys of the present invention.
即ち、本発明では、インベストメント、低圧または重力の永久的または半永久的な鋳型、スクイーズ、高圧ダイまたは砂型の鋳造に用いられるＡｌ−Ｚｎ−Ｍｇ系合金に関するものであって、以下の重量％による組成範囲を有するものである。
Ｚｎ：約４〜約５％、
Ｍｇ：約１〜約３％、
Ｇｕ：約１％以下、
Ｓｉ：約０．３％未満、
Ｆｅ：約０．１２％未満、
Ｍｎ：約０．５％未満、
Ｂ：約０．０１〜約０．０５％、
Ｔｉ：約０．１５％未満、
Ｚｒ：約０．０５〜約０．２％、
Ａｇ：約０．１〜約０．５％、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
Ａｌ：残部。
そして、本発明では、使用される合金は、Ｔ５テンパーまたはＴ６テンパーである。Ｔ５状態における物質により、Ａ３５６．０−Ｔ６で期待されるものよりも良好な機械的性質を達成でき、これはＤ３５７−Ｔ６合金の機械的性質に近いものである。Ｔ６状態では、Ｄ３５７−Ｔ６の高強度合金のものよりも良好な機械的性質を達成できる。
That is, the present invention relates to an Al—Zn—Mg-based alloy used for casting of investment, low-pressure or gravity permanent or semi-permanent molds, squeeze, high-pressure die or sand mold, and has the following composition by weight%: It has a range.
Zn: about 4 to about 5%,
Mg: about 1 to about 3%,
Gu: about 1% or less,
Si: less than about 0.3%,
Fe: less than about 0.12%,
Mn: less than about 0.5%,
B: about 0.01 to about 0.05%,
Ti: less than about 0.15%,
Zr: about 0.05 to about 0.2%,
Ag: about 0.1 to about 0.5%,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
Al: remainder.
In the present invention, the alloy used is T5 temper or T6 temper. The material in the T5 state can achieve better mechanical properties than expected with A356.0-T6, which is close to the mechanical properties of the D357-T6 alloy. In the T6 state, better mechanical properties can be achieved than that of the high strength alloy of D357-T6.
本発明は、一態様において、重量％で示される以下からなるアルミニウム鋳造合金に関するものである。
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％以下Ｃｕ、
約０．３％未満Ｓｉ、
０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウム。
また、別の態様において、本発明は、アルミニウム合金鋳造品の製造方法に関するものであって、この方法は、アルミニウム合金溶融物を準備するステップからなり、ここで前記溶融物は、
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％以下Ｃｕ、
約０．３％未満Ｓｉ、
０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウムからなる濃度の元素を含有しており、
さらに、前記方法は、前記鋳造品を形成するよう形状構成した鋳型に前記溶融物の少なくとも一部を投入するステップと、
前記鋳型から前記鋳造品を取り出すステップとからなる。
さらに、別の態様において、本発明は、アルミニウム合金鋳造品に関するものであり、以下の濃度の元素を含有している。
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％Ｃｕ、
約０．３％未満Ｓｉ、
０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウム。
これにより、良好な機械的性質を達成できる。
In one aspect, the present invention relates to an aluminum casting alloy consisting of the following expressed in weight%.
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% or less Cu,
Less than about 0.3% Si,
Fe less than 0.12%,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
The balance aluminum.
In another aspect, the present invention relates to a method for producing an aluminum alloy casting, the method comprising the step of preparing an aluminum alloy melt, wherein the melt comprises:
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% or less Cu,
Less than about 0.3% Si,
Fe less than 0.12%,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
Contains the concentration of the remaining aluminum,
Further, the method includes the step of charging at least a portion of the melt into a mold configured to form the cast article;
And taking out the casting from the mold.
Furthermore, in another aspect, the present invention relates to an aluminum alloy casting, and contains the following concentrations of elements.
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% Cu,
Less than about 0.3% Si,
Fe less than 0.12%,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
The balance aluminum.
Thereby, good mechanical properties can be achieved.
以上の記載に開示される趣旨から逸脱せずに本発明に対し改変をなしうることは、当業者なら容易に理解できるであろう。このような改変は、特許請求の範囲の文言で範囲外であると明確に記載しない限り、特許請求の範囲内に含まれるものである。したがって、ここに詳述された実施態様は例示のもので本発明の範囲を限定するものではなく、添付された特許請求の範囲およびその均等物の全てを完全な範囲とするものである。 Those skilled in the art will readily understand that modifications can be made to the present invention without departing from the spirit disclosed in the foregoing description. Such modifications are intended to fall within the scope of the claims, unless explicitly stated in the claims to be out of scope. Accordingly, the embodiments detailed herein are illustrative and do not limit the scope of the invention, but are intended to be the complete scope of the appended claims and their equivalents.
本発明においては、一定の実施態様に関して説明されたが、当業者は、添付の特許請求の範囲の各請求項に記載された趣旨および範囲を逸脱せず変更や改変等をなしうることを理解できる。 Although the present invention has been described with reference to certain embodiments, those skilled in the art will recognize that changes, modifications, and the like can be made without departing from the spirit and scope of the appended claims. it can.
Claims (18)
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％以下Ｃｕ、
約０．３％未満Ｓｉ、
約０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウム、
からなることを特徴とするアルミニウム鋳造合金。 % By weight
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% or less Cu,
Less than about 0.3% Si,
Less than about 0.12% Fe,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
Balance aluminum,
An aluminum casting alloy characterized by comprising:
ここで、前記溶融物は、
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％以下Ｃｕ、
約０．３％未満Ｓｉ、
約０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウム、
からなる濃度の元素を含有しており、
さらに、前記方法は、前記鋳造品を形成するよう形状構成した鋳型に前記溶融物の少なくとも一部を投入するステップと、
前記鋳型から前記鋳造品を取り出すステップとからなることを特徴とするアルミニウム合金鋳造品の製造方法。 A method for producing an aluminum alloy casting, the method comprising the steps of preparing an aluminum alloy melt,
Here, the melt is
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% or less Cu,
Less than about 0.3% Si,
Less than about 0.12% Fe,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
Balance aluminum,
Contains an element consisting of
Further, the method includes the step of charging at least a portion of the melt into a mold configured to form the cast article;
And a step of taking out the cast product from the mold.
約４〜約５％Ｚｎ、
約１〜約３％Ｍｇ、
約１％Ｃｕ、
約０．３％未満Ｓｉ、
約０．１２％未満Ｆｅ、
約０．５％未満Ｍｎ、
約０．０１〜約０．０５重量％Ｂ、
約０．１５％未満Ｔｉ、
約０．０５〜約０．２％Ｚｒ、
約０．１〜約０．５％Ａｇ、
多種多様な元素または不純物のそれぞれが０．０５％以下、
多種多様な元素または不純物の合計が０．１５％以下、
残部アルミニウム、
からなることを特徴とする成形アルミニウム合金鋳造品。 % By weight
About 4 to about 5% Zn,
About 1 to about 3% Mg,
About 1% Cu,
Less than about 0.3% Si,
Less than about 0.12% Fe,
Less than about 0.5% Mn,
About 0.01 to about 0.05 wt% B,
Less than about 0.15% Ti,
About 0.05 to about 0.2% Zr,
About 0.1 to about 0.5% Ag,
0.05% or less of each of a wide variety of elements or impurities,
The total of various elements or impurities is 0.15% or less,
Balance aluminum,
A molded aluminum alloy cast product comprising:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68451305P | 2005-05-25 | 2005-05-25 | |
| PCT/US2006/020081 WO2006127811A2 (en) | 2005-05-25 | 2006-05-24 | An al-zn-mg-ag high-strength alloy for aerospace and automotive castings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2008542533A true JP2008542533A (en) | 2008-11-27 |
Family
ID=37452786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008513670A Pending JP2008542533A (en) | 2005-05-25 | 2006-05-24 | Aluminum casting alloy and method for producing the same |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20060289093A1 (en) |
| EP (1) | EP1885897A4 (en) |
| JP (1) | JP2008542533A (en) |
| CA (1) | CA2609534A1 (en) |
| WO (1) | WO2006127811A2 (en) |
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| JP2011514434A (en) * | 2008-01-14 | 2011-05-06 | ザ・ボーイング・カンパニー | Aluminum zinc magnesium silver alloy |
| CN105339515A (en) * | 2013-09-30 | 2016-02-17 | 苹果公司 | Aluminum alloys with high strength and cosmetic appeal |
| JP2019512607A (en) * | 2016-07-13 | 2019-05-16 | アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． | Aluminum alloy with high strength and aesthetic appeal |
| US11345980B2 (en) | 2018-08-09 | 2022-05-31 | Apple Inc. | Recycled aluminum alloys from manufacturing scrap with cosmetic appeal |
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| US9249487B2 (en) | 2013-03-14 | 2016-02-02 | Alcoa Inc. | Methods for artificially aging aluminum-zinc-magnesium alloys, and products based on the same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011514434A (en) * | 2008-01-14 | 2011-05-06 | ザ・ボーイング・カンパニー | Aluminum zinc magnesium silver alloy |
| CN105339515A (en) * | 2013-09-30 | 2016-02-17 | 苹果公司 | Aluminum alloys with high strength and cosmetic appeal |
| CN111020314A (en) * | 2013-09-30 | 2020-04-17 | 苹果公司 | Aluminum alloy with high strength and attractive appearance |
| JP2019512607A (en) * | 2016-07-13 | 2019-05-16 | アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． | Aluminum alloy with high strength and aesthetic appeal |
| US11345980B2 (en) | 2018-08-09 | 2022-05-31 | Apple Inc. | Recycled aluminum alloys from manufacturing scrap with cosmetic appeal |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1885897A4 (en) | 2008-06-18 |
| EP1885897A2 (en) | 2008-02-13 |
| CA2609534A1 (en) | 2006-11-30 |
| US20060289093A1 (en) | 2006-12-28 |
| WO2006127811A2 (en) | 2006-11-30 |
| WO2006127811A3 (en) | 2007-03-01 |
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