JPS6123753A - Method for making fine crystal grain of al-mg-si alloy - Google Patents
Method for making fine crystal grain of al-mg-si alloyInfo
- Publication number
- JPS6123753A JPS6123753A JP14374684A JP14374684A JPS6123753A JP S6123753 A JPS6123753 A JP S6123753A JP 14374684 A JP14374684 A JP 14374684A JP 14374684 A JP14374684 A JP 14374684A JP S6123753 A JPS6123753 A JP S6123753A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- heating
- ingot
- temperature
- holding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910021365 Al-Mg-Si alloy Inorganic materials 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 20
- 239000013078 crystal Substances 0.000 title abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000000265 homogenisation Methods 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 19
- 239000000956 alloy Substances 0.000 abstract description 19
- 230000032683 aging Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 239000007779 soft material Substances 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 229910019752 Mg2Si Inorganic materials 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910018464 Al—Mg—Si Inorganic materials 0.000 description 1
- 229910019064 Mg-Si Inorganic materials 0.000 description 1
- 229910019406 Mg—Si Inorganic materials 0.000 description 1
- 238000012733 comparative method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001700 effect on tissue Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野１
本発明はＡｌ−Ｍｇ−Ｓｉ系合金の結晶粒微細化方法に
関し、さらに詳しくは、機械的性質および強度の優れた
Ａｌ−Ｍｇ−Ｓｉ系合金を得るためのＡｌ−Ｍｇ−Ｓｉ
系合金の結晶粒微細化方法に関する。Detailed Description of the Invention [Industrial Application Field 1] The present invention relates to a method for refining the crystal grains of Al-Mg-Si alloys, and more particularly, Al-Mg-Si to obtain alloy
This invention relates to a method for grain refinement of alloys.
［従来技術］
一般に、Ａｌ−Ｍｇ−Ｓｉ系合金は、優れた機械的性質
、耐蝕性および加工性を有しているため、自動車用部品
、陸運車輌、船舶、陸上構造物および建築等に多量に使
用されている熱処理型のアルミニウム合金である。[Prior Art] In general, Al-Mg-Si alloys have excellent mechanical properties, corrosion resistance, and workability, so they are used in large quantities in automobile parts, land transportation vehicles, ships, land structures, architecture, etc. It is a heat-treated aluminum alloy used in
この製品の熱処理方法としては、溶体化・焼入れ後に時
効処理を行なったＴ６処理材が一般に使用されているが
、厳しい成形加工を行なう場合には、一旦軟質材として
成形加工を行なった後に溶体化・焼入れおよび時効処理
を行なって使用されることが多い。As for the heat treatment method for this product, T6-treated material is generally used, which is solution-treated, hardened, and then aged.However, when performing severe forming processing, it is necessary to first perform forming processing as a soft material and then solution treatment. - Often used after quenching and aging treatment.
そして、このＡｌＭｇ−Ｓｉ系合金の優れた機械的性質
は、Ｍｇ２Ｓｉという金属間化合物を微細均一に析出さ
せることによって得られるものである。このため、従来
はＭｇ２Ｓｉの析出処理に先立ちＭ、、Ｓｉをマトリッ
クス中に固溶させるため５００℃以上の高温で鋳塊の均
質化処理および溶体化処理を行なっているのが一般的で
ある。The excellent mechanical properties of this AlMg-Si alloy are obtained by finely and uniformly precipitating an intermetallic compound called Mg2Si. For this reason, conventionally, prior to the precipitation treatment of Mg2Si, it is common to perform homogenization treatment and solution treatment of the ingot at a high temperature of 500° C. or higher in order to dissolve M, Si in the matrix.
また、材料の機械的性質および成形加工性等に大きな影
響をおよぼす結晶粒度については、微細な程これらの緒
特性が優れるものであり、そして１、 この結晶粒度
を小さくするためには、Ｍｎ、Ｃｒ。In addition, regarding the grain size, which has a large effect on the mechanical properties and moldability of the material, the finer the grain size, the better these properties are. Cr.
Ｚｒ、■等の、所謂、遷移激素を微細に析出させて結晶
粒の粗大化を防止することを一般に行なっているもので
あるが、上記に説明した高温における均質化処理を行な
うとＭｎ、Ｃｒ、Ｚｒ、Ｖ等の析出物が粗大化し、結晶
粒粗大化防止効果が失なわれてしまう。Generally, so-called transition radicals such as Zr, etc. are precipitated finely to prevent coarsening of crystal grains, but when the homogenization treatment at high temperature described above is carried out, Mn, Cr , Zr, V, etc., become coarse, and the effect of preventing crystal grain coarsening is lost.
そのため、Ａｌ−Ｍｇ−８ｉ系合金は粗大な結晶粒組織
となり易く、Ｔ６調質における静的強度、伸びおよび疲
労強度が劣ったり、軟質材を加工すると肌荒れや割れが
発生し易くなる等の問題かあった。Therefore, Al-Mg-8i alloys tend to have a coarse grain structure, resulting in problems such as poor static strength, elongation, and fatigue strength during T6 heat treatment, and roughness and cracking when processing soft materials. There was.
［発明が解決しようとする問題点］
本発明は上記に説明したように、ノ＼１−Ｍｇ−８１系
合金の従来における処理方法、例えば、Ｔ６処理による
機械的性質の疲労強度や伸びが劣化したり、また、軟質
材の加工によって生じる肌荒れや割れが発生するという
問題点を解決することができるＡｌ−Ｍｇ−３ｉ系合金
を得るために、Ａｌ−Ｍｇ−８ｉ系合金の結晶粒を微細
化する方法を提供するものである。[Problems to be Solved by the Invention] As explained above, the present invention solves the problem of deterioration of mechanical properties such as fatigue strength and elongation due to conventional processing methods of No\1-Mg-81 alloy, such as T6 treatment. In addition, in order to obtain an Al-Mg-3i alloy that can solve the problems of surface roughness and cracking caused by processing soft materials, the crystal grains of the Al-Mg-8i alloy are made finer. This provides a method for converting
［問題点を解決するための手段１
本発明に係るＡｌ−Ｍｇ−８ｉ系合金の結晶粒微細化方
法の特徴とするところは、ＡＩ Ｍｇ Ｓｉ系合金
鋳塊を、３５０〜５００℃の温度に４０℃／Ｈｒ以下の
速度で加熱して２〜２４Ｈｒ保持する均質化処理を行な
うか、或いは、３５０〜４５０℃の温度に２〜１２Ｈｒ
加熱保持後、さらに、４、５０〜５２０℃の温度に２〜
１２Ｈｒ加熱保持Ｖる二段の加熱保持を行なう均質化処
理を行なった後に、塑性加工を行なうことにある。[Means for Solving the Problems 1] The method for grain refining of Al-Mg-8i alloy according to the present invention is characterized by heating an AI Mg Si alloy ingot to a temperature of 350 to 500°C. Perform homogenization treatment by heating at a rate of 40°C/Hr or less and holding for 2-24Hr, or heat at a temperature of 350-450°C for 2-12Hr.
After heating and holding, it is further heated to a temperature of 4.50 to 520°C for 2 to 50 minutes.
The purpose is to perform plastic working after a homogenization process that involves two stages of heating and holding for 12 hours.
そして、本発明に係るＡＩ 、Ｍｇ Ｓｉ系合金の
結晶粒微細化方法の二段の加熱保持を行なうことによっ
て、続く次工程における高温の溶体化処理を行なっても
結晶粒が粗大化しないので、結晶粒が微細な成形加工性
に優れた軟質材を得ることが
ｉでき、また、４５０〜５５０℃（４８０〜５３０
℃が望ましい。）の温度で溶体化・焼入れを行なうこと
によって結晶粒が微細な、静的強度、伸びおよび疲労強
度が優れたＴ６材を製造することがで外るものである。By carrying out the two-step heating and holding method of the method for grain refining of AI, Mg-Si based alloys according to the present invention, the grains do not become coarse even in the subsequent high-temperature solution treatment in the next step. It is possible to obtain a soft material with fine grains and excellent formability.
It can also be heated to 450-550℃ (480-530℃).
℃ is preferable. ), it is possible to produce T6 material with fine grains and excellent static strength, elongation, and fatigue strength.
本発明に係るＡＩ Ｍｇ−３ｉ系合金の結晶粒微細化
方法について以下詳細に説明する。The method for refining the grains of an AI Mg-3i alloy according to the present invention will be described in detail below.
Ａｌ−Ｍｇ−３ｉ系合金鋳塊の均質化処理について説明
する。The homogenization treatment of an Al-Mg-3i alloy ingot will be explained.
（１）ＡＩ−Ｍｇ−３ｉ系合金鋳塊を、３５０〜５００
℃の温度に４０℃／Ｈｒ以下の速度で加熱して２〜２４
Ｈｒ保持する均質化処理について説明する。(1) AI-Mg-3i alloy ingot, 350-500
Heating at a rate of 40°C/Hr or less to a temperature of 2 to 24°C
The homogenization process for maintaining Hr will be explained.
即ち、３５０℃未満の温度では結晶粒粗大化防止には効
果が小さく、また、５００℃を越える高い温度では結晶
粒粗大化防止の効果は失なわれ、また、加熱速度が４０
℃／Ｈｒより速い加熱速度では結晶粒粗大化防止の効果
が失なわれる。そして、保持時間は２Ｈｒ未満では効果
が充分ではなく、２４Ｈｒを越えると効果が飽和してし
まいそれ以」二の保持は無駄である。That is, at temperatures below 350°C, the effect of preventing crystal grain coarsening is small, and at high temperatures exceeding 500°C, the effect of preventing crystal grain coarsening is lost;
If the heating rate is faster than .degree. C./Hr, the effect of preventing crystal grain coarsening is lost. If the holding time is less than 2 hours, the effect will not be sufficient, and if it exceeds 24 hours, the effect will be saturated, and further holding is useless.
（２）３５０−４５０℃の温度に２−１２８ｒ加熱保持
後、さらに、４５０〜５２０℃の温度に加熱保持する二
段の加熱保持を行なう均質化処理について説明する。(2) A homogenization process will be described in which a two-stage heating and holding process is performed in which the material is heated and held at a temperature of 350 to 450°C for 2 to 128 r, and then heated and held at a temperature of 450 to 520°C.
即ち、一段および二段の加熱保持において、３５０℃未
満および４５０℃未満の温度では結晶粒粗大化防止効果
は小さく、また、４５０℃、５２０℃を夫々越える高い
温度では結晶粒粗大化防止効果が失なわれ、保持時間に
ついても、夫々２Ｈｒ未満では結晶粒粗大化防止効果が
小さく、また、夫々１２Ｈｒを越えると結晶粒粗大化防
止効果は飽和する。That is, in one-stage and two-stage heating and holding, the effect of preventing crystal grain coarsening is small at temperatures below 350°C and below 450°C, and the effect of preventing crystal grain coarsening is small at temperatures exceeding 450°C and 520°C, respectively. Regarding the holding time, if the holding time is less than 2 hours, the effect of preventing crystal grain coarsening is small, and if it exceeds 12 hours, the effect of preventing crystal grain coarsening is saturated.
これら（１）（２）何れかの加熱保持を行なった後に塑
性加工を行なうのである。Plastic working is performed after heating and holding either of these (1) or (2).
次いで、塑性加工後の熱処理について説明する。Next, heat treatment after plastic working will be explained.
軟質化処理は３００〜４５０℃の温度において行ない、
３００℃未満では充分に軟質化することがで外す、４５
０℃を越えると飽和してしまい、次に、溶体化処理を４
５０〜５５０℃の温度で行ない、４５ （１’Ｃ未満で
は充分な強度が得られず、５５０℃を越えると結晶粒が
粗大化してしまい、さらに、時効処理は１５０〜２２０
℃の温度で行ない、１５０℃未満および２２０℃を越え
る温度では優れた機械的性質を得ることができない。The softening treatment is carried out at a temperature of 300 to 450°C,
If it is below 300℃, it will be sufficiently softened and removed, 45
If the temperature exceeds 0°C, it will become saturated, and then solution treatment is carried out at 4°C.
The aging treatment is carried out at a temperature of 50 to 550°C, and if the temperature is less than 45°C, sufficient strength cannot be obtained, and if it exceeds 550°C, the crystal grains become coarse.
C. and temperatures below 150.degree. C. and above 220.degree. C. do not allow good mechanical properties to be obtained.
次に、発明の名称に係るＡＩ−ＭＢ−３ｉ系合金の結晶
粒微細化方法において使用するＡｌ−Ｍｇ−８ｉ系合金
の含有成分および成分割合について説明する。Next, the components and component ratios of the Al-Mg-8i alloy used in the method for grain refining of the AI-MB-3i alloy according to the title of the invention will be explained.
Ｍｇ、ＳｉはＡｌ−Ｍｇ−８ｉ系合金に高い掻度を付与
する元素であり、Ｍ８含有量は０．３５・〜２．Ｏｗｔ
％、Ｓｉ含有量は０．２０〜１．５ｕ＋ｔ％の範囲が良
好であり、夫々下映未満および上限を越える含有量では
優れた強度を得られず、成形加工性が劣化するようにな
る。Mg and Si are elements that give high scratchiness to Al-Mg-8i alloy, and the M8 content is 0.35 to 2. Owt
%, the Si content is preferably in the range of 0.20 to 1.5 u+t%, and if the content is less than the lower limit or exceeds the upper limit, respectively, excellent strength cannot be obtained and moldability deteriorates.
また、強度を付与する元素としてＣｕを含有させること
もでき、含有量は０．０５〜１．０１％の範囲するのが
よく、含有量が０，０５ｕ＋ｔ％未満では強度が得られ
ず、また、１．Ｏｕ＋ｔ％を越える含有量では成形加工
性を害すぎようになる。Further, Cu can be contained as an element that imparts strength, and the content is preferably in the range of 0.05 to 1.01%, and if the content is less than 0.05u+t%, no strength can be obtained; , 1. If the content exceeds Ou+t%, the molding processability will be affected too much.
さらに、組織を安定化させるために重要な元素として、
Ｍｎ、Ｃｒ、Ｚｒ、Ｖ、Ｔｉ、Ｂを含有させることがで
き、Ｍｎ含有量０．０５〜０．４０１１１ｔ％、Ｃｒ含
有量０．０５〜０．４０ｕ＋Ｌ％、Ｚｒ含有量０．０５
−０．２．ＯＷ［％、Ｖ Ｏ，０２−０，１５！Ｉｌｔ
％、Ｔ ｉ ０１００５−０．５＋ｕｔ％、Ｂ Ｏ，０
００５−０，０５ｕ＋ｔ％の範囲とするのがよく、これ
らの範囲の下限未満では組織安定化に効果が小さく、ま
た、上限を越えると効果が飽和し、がっ、巨大化合物が
発生し易くなる。Furthermore, as an important element for stabilizing the tissue,
It can contain Mn, Cr, Zr, V, Ti, and B, with Mn content of 0.05 to 0.40111t%, Cr content of 0.05 to 0.40u+L%, and Zr content of 0.05.
-0.2. OW [%, VO, 02-0, 15! Ilt
%, T i 01005-0.5+ut%, B O,0
The range is preferably 0.05-0.05u+t%; below the lower limit of these ranges, the effect on tissue stabilization is small, and when the upper limit is exceeded, the effect is saturated and large compounds are likely to occur. .
［実施例１
本発明に係るＡｌ−Ｍｇ−８ｉ系合金の結晶粒微細化方
法の実施例を説明する。[Example 1] An example of a method for grain refinement of an Al-Mg-8i alloy according to the present invention will be described.
実施例
第１表に示す含有成分および成分割合のＡＩ−ＭＦｌ−
８ｉ系合金を通常の方法により溶製し、鋳造して３１５
ｍ＋ｎｊの鋳塊を作製し、下記の条件により材料の特性
について調査した。Example AI-MFl- with the components and component ratios shown in Table 1
8i series alloy is melted and cast using the usual method to obtain 315
An ingot of m+nj was produced, and the characteristics of the material were investigated under the following conditions.
【
（１）本発明に係るＡｌ−Ｍｇ Ｓｉ系合金の結晶粒
微細化方法
Ａ ； ２０℃／ Ｉ−１ｒの加熱速度で鋳塊番４５０
℃に加熱し１２Ｈｒ保持後、４５０−３５０℃の温度で
熱間圧延を行ない５１Ｉｌｌｎｊの板材を得た。[(1) Grain refinement method A of Al-Mg Si alloy according to the present invention;
After heating to a temperature of 12 hours and holding for 12 hours, hot rolling was performed at a temperature of 450 to 350 degrees Celsius to obtain a plate material of 51Illnj.
Ｂ ： 鋳塊を４００℃の温度で１２８ｒ加熱保持後、
５００℃の温度で４８ｒ加熱保持し、４５０〜３５０’
Ｃの温度で熱間圧延を行ない５ｎｕ＋＋ｔの板材を得た
。B: After heating and holding the ingot at a temperature of 400°C for 128r,
Heat and hold for 48r at a temperature of 500℃, 450~350'
Hot rolling was carried out at a temperature of C to obtain a plate material of 5 nu++t.
（２）比較方法
Ｃ： 鋳塊を５２０℃の温度で１２Ｈｒ加熱保持し、４
５０〜３５０℃の温度で熱間圧延を行ない５關１．の板
材を得た。(2) Comparative method C: The ingot was heated and held at a temperature of 520°C for 12 hours, and
Hot rolling is carried out at a temperature of 50 to 350°C. The board material was obtained.
Ｆ
第２表は軟質材、第３表はＴ６時効材の性能調査結果ル
呟本発明に係るＡｌ−Ｍｇ−８ｉ系合金の結晶粒微細化
方法により製造された材料は、比較方法による材料に比
して、軟質材は結晶粒が微細であり、伸び、エリクセン
値および９０°曲げ性等が優れており、加工材の耐肌荒
れ性にも優れでおり、また、Ｔ６時効材においても、比
較方法に比して強度、伸びおよび疲労強度が優れている
ことがわかる。F Table 2 shows the performance investigation results for soft materials, and Table 3 shows the performance investigation results for T6 aged materials. In comparison, soft materials have finer grains and are superior in elongation, Erichsen value, and 90° bendability, and are also superior in surface roughness resistance of processed materials. It can be seen that the strength, elongation, and fatigue strength are superior to those obtained using the method.
［発明の効果１
以上説明したように、本発明に係るＡｌ−Ｍｇ−８ｉ系
合金の結晶粒微細化方法は上記の構成を有しているもの
であるから、従来材に比して、強度、伸び、エリクセン
値、疲労強度に極めて優れており、さらに、肌荒れ、割
れ等の発生がない優れた効果を有しているものである。[Effect of the invention 1 As explained above, since the method for grain refining of Al-Mg-8i alloy according to the present invention has the above-mentioned structure, the strength is improved compared to conventional materials. It has extremely excellent elongation, Erichsen value, and fatigue strength, and also has an excellent effect of not causing rough skin, cracking, etc.
一９武ｎ−19 Take n-
Claims (1)
度に４０℃／Ｈｒ以下の速度で加熱して２〜２４Ｈｒ保
持する均質化処理を行なうか、或いは、３５０〜４５０
℃の温度に２〜１２Ｈｒ加熱保持後、さらに、４５０〜
５２０℃の温度に２〜１２Ｈｒ加熱保持する二段の加熱
保持を行なう均質化処理を行なった後に、塑性加工を行
なうことを特徴とするＡｌ−Ｍｇ−Ｓｉ系合金の結晶粒
微細化方法。The Al-Mg-Si alloy ingot is heated to a temperature of 350 to 500°C at a rate of 40°C/Hr or less and homogenized for 2 to 24Hr, or
After heating and maintaining at a temperature of ℃ for 2 to 12 hours, further heated to a temperature of 450 to
A method for refining grains of an Al-Mg-Si alloy, which comprises performing a homogenization treatment in which two stages of heating and holding are performed at a temperature of 520° C. for 2 to 12 hours, followed by plastic working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14374684A JPS6123753A (en) | 1984-07-11 | 1984-07-11 | Method for making fine crystal grain of al-mg-si alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14374684A JPS6123753A (en) | 1984-07-11 | 1984-07-11 | Method for making fine crystal grain of al-mg-si alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6123753A true JPS6123753A (en) | 1986-02-01 |
Family
ID=15346048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14374684A Pending JPS6123753A (en) | 1984-07-11 | 1984-07-11 | Method for making fine crystal grain of al-mg-si alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6123753A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582659A (en) * | 1993-10-12 | 1996-12-10 | Nippon Light Metal Co., Ltd. | Aluminum alloy for forging, process for casting the same and process for heat treating the same |
-
1984
- 1984-07-11 JP JP14374684A patent/JPS6123753A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582659A (en) * | 1993-10-12 | 1996-12-10 | Nippon Light Metal Co., Ltd. | Aluminum alloy for forging, process for casting the same and process for heat treating the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110983131B (en) | 7-series aluminum alloy section and manufacturing method thereof | |
| CN112626386A (en) | High-strength corrosion-resistant Al-Mg-Si-Cu aluminum alloy and preparation method and application thereof | |
| JP2001517735A (en) | Aluminum alloy and heat treatment method thereof | |
| JPH0261025A (en) | Al-si alloy plate material having excellent formability and its manufacture | |
| JPH06340940A (en) | Aluminum alloy sheet excellent in press formability and baking hardenability and its production | |
| JP2000160310A (en) | Production of aluminum alloy sheet suppressed in cold aging property | |
| JPS61272342A (en) | Aluminum alloy sheet excelling in formability and baking hardening and its production | |
| JPH0547615B2 (en) | ||
| JPS61163232A (en) | High strength al-mg-si alloy and its manufacture | |
| JPS59126761A (en) | Production of heat treatment type aluminum alloy having excellent formability | |
| JPS6123753A (en) | Method for making fine crystal grain of al-mg-si alloy | |
| JPH0480979B2 (en) | ||
| JPS58213850A (en) | Manufacture of al-zn-mg-cu alloy material of superior formability | |
| JPH0138866B2 (en) | ||
| JP3278119B2 (en) | Method for producing Al-Mg-Si alloy sheet excellent in formability and bake hardenability | |
| JPH06272000A (en) | Production of al alloy sheet excellent in formability and baking hardenability | |
| JPH05302154A (en) | Heat treatment method for Al-Mg-Si based aluminum alloy plate | |
| KR960007633B1 (en) | High Formability High Strength Aluminum-Magnesium-Based Alloy and Manufacturing Method Thereof | |
| JP2007239005A (en) | Manufacturing method of 6000 series aluminum alloy plate excellent in room temperature non-aging property, formability and paint bake hardenability | |
| JPH01225738A (en) | Heat treatment-type aluminum alloy rolled plate for forming and its manufacture | |
| JP3359428B2 (en) | Manufacturing method of aluminum alloy sheet for forming | |
| JPH07228957A (en) | Production of aluminum alloy sheet having excellent formability and quench-hardenability | |
| JP2858069B2 (en) | Stress corrosion cracking resistant high strength aluminum alloy sheet and method for producing the same | |
| JPS616244A (en) | High strength alloy for forming having fine grain and its manufacture | |
| JPS5831054A (en) | Aluminum alloy having superior strength and corrosion resistance and its manufacture |