CN104404368A - Corrosion-resistant stainless steel alloy and preparation method thereof - Google Patents
Corrosion-resistant stainless steel alloy and preparation method thereof Download PDFInfo
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- CN104404368A CN104404368A CN201410566275.1A CN201410566275A CN104404368A CN 104404368 A CN104404368 A CN 104404368A CN 201410566275 A CN201410566275 A CN 201410566275A CN 104404368 A CN104404368 A CN 104404368A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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Abstract
The invention relates to a corrosion-resistant stainless steel alloy and a preparation method thereof, and belongs to the field of alloy materials. The corrosion-resistant stainless steel alloy comprises the following raw materials in parts by mass: 20-22 parts of cobalt, 3-6 parts of nickel, 1-2 parts of copper, 1-2 parts of silicon, 2-4 parts of molybdenum, 0.5-1 part of manganese, 1-2 parts of carbon, 1-3 parts of phosphorus, 1-5 parts of silicon carbide, 1-2 parts of calcium fluoride, and 1-4 parts of boron nitride. Firstly, the obtained stainless steel alloy has the advantages of excellent performance, high strength, and good salt fog corrosion resistance; secondly, the obtained stainless steel alloy has good toughness, and has the tensile breaking strength of 1200 MPa; and thirdly, the preparation method is simple, and is easy to operate.
Description
Technical field
The invention belongs to field of alloy material, be specifically related to a kind of erosion resistance Stainless Steel Alloy and preparation method thereof.
Background technology
Stainless steel is exactly generally the steel being not easy to get rusty, and in fact a part of stainless steel, existing rustless property, has erosion resistance again.Stainless rustless property and solidity to corrosion are the formation due to its rich chromium oxide film (passive film) on the surface.This rustless property and solidity to corrosion are relative.Test shows, steel is in the weak medium such as air, water and in the Oxidant such as nitric acid, and its solidity to corrosion improves with the increase of chromium content in steel, when chromium content reaches certain per-cent, the solidity to corrosion of steel is undergone mutation, namely from easily getting rusty to not easily getting rusty, never anti-corrosion to corrosion-resistant.But the increase of chromium content, its cost also increases relatively.
In actual applications, stainless steel has gratifying corrosion resisting property.According to the experience used, except mechanical failure, stainless corrosion is mainly manifested in: stainless a kind of serious Corrosion Types is local corrosion, that is stress corrosion crack, pitting attack, intergranular corrosion, corrosion fatigue and crevice corrosion.The inefficacy example that these local corrosions cause almost accounts for the over half of inefficacy example.And stainless inefficacy is relevant with its selection in the preparation to a great extent.
Therefore a kind of superior performance how is obtained and the good stainless steel of erosion resistance has become this area technical barrier urgently to be resolved hurrily.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, provide a kind of erosion resistance Stainless Steel Alloy and preparation method thereof, this Stainless Steel Alloy has excellent performance, especially has excellent erosion resistance and good toughness.
The technical solution used in the present invention is as follows:
Erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 20-22 part, nickel 3-6 part, copper 1-2 part, silicon 1-2 part, molybdenum 2-4 part, manganese 0.5-1 part, carbon 1-2 part, phosphorus 1-3 part, silicon carbide 1-5 part, Calcium Fluoride (Fluorspan) 1-2 part, boron nitride 1-4 part.
Described erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 21-22 part, nickel 4-5 part, copper 1-2 part, silicon 1-2 part, molybdenum 3-4 part, manganese 0.5-0.8 part, carbon 1-2 part, phosphorus 1-2 part, silicon carbide 2-4 part, Calcium Fluoride (Fluorspan) 1-2 part, boron nitride 2-3 part.
Described erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 20-21 part, nickel 4-6 part, copper 1-2 part, silicon 1-2 part, molybdenum 2-3 part, manganese 0.5-0.6 part, carbon 1-2 part, phosphorus 1-2 part, silicon carbide 3-4 part, Calcium Fluoride (Fluorspan) 1-2 part, boron nitride 2-4 part.
Described erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 21 parts, 4 parts, nickel, copper 1 part, silicon 1 part, molybdenum 3 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 2 parts, silicon carbide, 1 part, Calcium Fluoride (Fluorspan), boron nitride 2 parts.
Described erosion resistance Stainless Steel Alloy, comprise the following raw material according to mass fraction meter: cobalt 22 parts, 5 parts, nickel, copper 2 parts, silicon 2 parts, molybdenum 4 parts, 0.8 part, manganese, 2 parts, carbon, 2 parts, phosphorus, 4 parts, silicon carbide, 2 parts, Calcium Fluoride (Fluorspan), boron nitride 3 parts.
Described erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 20 parts, 4 parts, nickel, copper 1 part, silicon 1 part, molybdenum 2 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 3 parts, silicon carbide, 1 part, Calcium Fluoride (Fluorspan), boron nitride 2 parts.
Described erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 21 parts, 6 parts, nickel, copper 2 parts, silicon 2 parts, molybdenum 3 parts, 0.6 part, manganese, 2 parts, carbon, 2 parts, phosphorus, 4 parts, silicon carbide, 2 parts, Calcium Fluoride (Fluorspan), boron nitride 4 parts.
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide, Calcium Fluoride (Fluorspan) and boron nitride are mixed, suppress under 300-500MPa, after in nitrogen atmosphere, 20-40min is sintered at 1320-1400 DEG C, be cooled to 400-500 DEG C, keep 1-2h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
compared with prior art, its beneficial effect is in the present invention:the first, gained Stainless Steel Alloy of the present invention has excellent performance, and its intensity is high, and salt fog resistance is good; The second, gained Stainless Steel Alloy of the present invention has good toughness, and its tensile break strength is 1200MPa; 3rd, preparation method of the present invention is simple, easy handling.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, and the reagent used in the present invention is if no special instructions all by commercial acquisition.
Embodiment 1
Erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 20 parts, 3 parts, nickel, copper 1 part, silicon 1 part, molybdenum 2 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 1 part, silicon carbide, 1 part, Calcium Fluoride (Fluorspan), boron nitride 1 part.
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide, Calcium Fluoride (Fluorspan) and boron nitride are mixed, suppress under 300MPa, after in nitrogen atmosphere, 20min is sintered at 1320 DEG C, be cooled to 400 DEG C, keep 1h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
Embodiment 2
Erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 22 parts, 6 parts, nickel, copper 2 parts, silicon 2 parts, molybdenum 4 parts, 1 part, manganese, 2 parts, carbon, 3 parts, phosphorus, 5 parts, silicon carbide, 2 parts, Calcium Fluoride (Fluorspan), boron nitride 4 parts.
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide, Calcium Fluoride (Fluorspan) and boron nitride are mixed, suppress under 500MPa, after in nitrogen atmosphere, 40min is sintered at 1400 DEG C, be cooled to 500 DEG C, keep 2h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
Embodiment 3
Erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 21 parts, 4 parts, nickel, copper 1 part, silicon 1 part, molybdenum 3 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 2 parts, silicon carbide, 1 part, Calcium Fluoride (Fluorspan), boron nitride 2 parts.
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide, Calcium Fluoride (Fluorspan) and boron nitride are mixed, suppress under 400MPa, after in nitrogen atmosphere, 30min is sintered at 1380 DEG C, be cooled to 450 DEG C, keep 1.5h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
Embodiment 4
Erosion resistance Stainless Steel Alloy, comprise the following raw material according to mass fraction meter: cobalt 22 parts, 5 parts, nickel, copper 2 parts, silicon 2 parts, molybdenum 4 parts, 0.8 part, manganese, 2 parts, carbon, 2 parts, phosphorus, 4 parts, silicon carbide, 2 parts, Calcium Fluoride (Fluorspan), boron nitride 3 parts.
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide, Calcium Fluoride (Fluorspan) and boron nitride are mixed, suppress under 320MPa, after in nitrogen atmosphere, 23min is sintered at 1330 DEG C, be cooled to 420 DEG C, keep 1h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
Embodiment 5
Erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 20 parts, 4 parts, nickel, copper 1 part, silicon 1 part, molybdenum 2 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 3 parts, silicon carbide, 1 part, Calcium Fluoride (Fluorspan), boron nitride 2 parts.
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide, Calcium Fluoride (Fluorspan) and boron nitride are mixed, suppress under 340MPa, after in nitrogen atmosphere, 25min is sintered at 1340 DEG C, be cooled to 420 DEG C, keep 2h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
Embodiment 6
Erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 21 parts, 6 parts, nickel, copper 2 parts, silicon 2 parts, molybdenum 3 parts, 0.6 part, manganese, 2 parts, carbon, 2 parts, phosphorus, 4 parts, silicon carbide, 2 parts, Calcium Fluoride (Fluorspan), boron nitride 4 parts.
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide, Calcium Fluoride (Fluorspan) and boron nitride are mixed, suppress under 380MPa, after in nitrogen atmosphere, 28min is sintered at 1360 DEG C, be cooled to 460 DEG C, keep 2h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
Reference examples 1
The present embodiment is identical with embodiment 3, and difference is, does not use Calcium Fluoride (Fluorspan), specific as follows:
Erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 21 parts, 4 parts, nickel, copper 1 part, silicon 1 part, molybdenum 3 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 2 parts, silicon carbide, boron nitride 2 parts.
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide and boron nitride are mixed, suppress under 400MPa, after in nitrogen atmosphere, 30min is sintered at 1380 DEG C, be cooled to 450 DEG C, keep 1.5h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
Reference examples 2
The present embodiment is identical with embodiment 3, and difference is, does not use boron nitride, specific as follows:
Erosion resistance Stainless Steel Alloy, comprises the following raw material according to mass fraction meter: cobalt 21 parts, 4 parts, nickel, copper 1 part, silicon 1 part, molybdenum 3 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 2 parts, silicon carbide, 1 part, Calcium Fluoride (Fluorspan).
The preparation method of described erosion resistance Stainless Steel Alloy, comprise the steps: according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide and Calcium Fluoride (Fluorspan) are mixed, suppress under 400MPa, after in nitrogen atmosphere, 30min is sintered at 1380 DEG C, be cooled to 450 DEG C, keep 1.5h, rear continuation cooling, to naturally cooling, obtain described erosion resistance Stainless Steel Alloy.
performance test
The performance of the embodiment of the present invention 1 ~ 6 products obtained therefrom and reference examples 1 to 2 products obtained therefrom is tested, wherein salt fog resistance test: gained finished product is soaked in respectively 200h in the sodium chloride solution of 10wt%, be placed on 30d in the environment of humidity 98%, temperature 35-45 DEG C, whether observe surface to corrode, test result is in table 1.
Table 1 product performance test data
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Reference examples 1 | Reference examples 2 | |
| Tensile break strength, MPa | 1190 | 1200 | 1200 | 1198 | 1189 | 1200 | 500 | 389 |
| Tension set, % | 42 | 48 | 49 | 45 | 46 | 43 | 16 | 24 |
| Salt fog resistance | Unchanged | Unchanged | Unchanged | Unchanged | Unchanged | Unchanged | Spot corrosion | Spot corrosion |
Products obtained therefrom of the present invention has excellent performance as seen from the above table, and embodiment 3 can be considered most preferred embodiment.
Claims (8)
1. erosion resistance Stainless Steel Alloy, it is characterized in that, comprise the following raw material according to mass fraction meter: cobalt 20-22 part, nickel 3-6 part, copper 1-2 part, silicon 1-2 part, molybdenum 2-4 part, manganese 0.5-1 part, carbon 1-2 part, phosphorus 1-3 part, silicon carbide 1-5 part, Calcium Fluoride (Fluorspan) 1-2 part, boron nitride 1-4 part.
2. erosion resistance Stainless Steel Alloy according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: cobalt 21-22 part, nickel 4-5 part, copper 1-2 part, silicon 1-2 part, molybdenum 3-4 part, manganese 0.5-0.8 part, carbon 1-2 part, phosphorus 1-2 part, silicon carbide 2-4 part, Calcium Fluoride (Fluorspan) 1-2 part, boron nitride 2-3 part.
3. erosion resistance Stainless Steel Alloy according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: cobalt 20-21 part, nickel 4-6 part, copper 1-2 part, silicon 1-2 part, molybdenum 2-3 part, manganese 0.5-0.6 part, carbon 1-2 part, phosphorus 1-2 part, silicon carbide 3-4 part, Calcium Fluoride (Fluorspan) 1-2 part, boron nitride 2-4 part.
4. erosion resistance Stainless Steel Alloy according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: cobalt 21 parts, 4 parts, nickel, copper 1 part, silicon 1 part, molybdenum 3 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 2 parts, silicon carbide, 1 part, Calcium Fluoride (Fluorspan), boron nitride 2 parts.
5. erosion resistance Stainless Steel Alloy according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: cobalt 22 parts, 5 parts, nickel, copper 2 parts, silicon 2 parts, molybdenum 4 parts, 0.8 part, manganese, 2 parts, carbon, 2 parts, phosphorus, 4 parts, silicon carbide, 2 parts, Calcium Fluoride (Fluorspan), boron nitride 3 parts.
6. erosion resistance Stainless Steel Alloy according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: cobalt 20 parts, 4 parts, nickel, copper 1 part, silicon 1 part, molybdenum 2 parts, 0.5 part, manganese, 1 part, carbon, 1 part, phosphorus, 3 parts, silicon carbide, 1 part, Calcium Fluoride (Fluorspan), boron nitride 2 parts.
7. erosion resistance Stainless Steel Alloy according to claim 1, it is characterized in that, comprise the following raw material according to mass fraction meter: cobalt 21 parts, 6 parts, nickel, copper 2 parts, silicon 2 parts, molybdenum 3 parts, 0.6 part, manganese, 2 parts, carbon, 2 parts, phosphorus, 4 parts, silicon carbide, 2 parts, Calcium Fluoride (Fluorspan), boron nitride 4 parts.
8. the preparation method of erosion resistance Stainless Steel Alloy according to claim 1, it is characterized in that, comprise the steps:, according to quality proportioning, cobalt, nickel, copper, silicon, molybdenum, manganese, carbon, phosphorus, silicon carbide, Calcium Fluoride (Fluorspan) and boron nitride to be mixed, suppress under 300-500MPa, after in nitrogen atmosphere, at 1320-1400 DEG C, sinter 20-40min, be cooled to 400-500 DEG C, keep 1-2h, rear continuation cooling, to naturally cooling, obtains described erosion resistance Stainless Steel Alloy.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105112777A (en) * | 2015-08-28 | 2015-12-02 | 苏州莱特复合材料有限公司 | Abrasion-resistant iron-based composite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110259478A1 (en) * | 2008-02-28 | 2011-10-27 | V & M Deutschland Gmbh | High-strength, low-alloy steel for seamless pipes with outstanding weldability and corrosion resistance |
| CN102676941A (en) * | 2012-04-25 | 2012-09-19 | 李小强 | Tungsten carbide particle-reinforced wear-resistant corrosion-resistant stainless steel and preparation method thereof |
| CN103966509A (en) * | 2014-05-29 | 2014-08-06 | 济钢集团有限公司 | Marine environment corrosion-resistant steel plate and preparation method thereof |
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2014
- 2014-10-22 CN CN201410566275.1A patent/CN104404368A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110259478A1 (en) * | 2008-02-28 | 2011-10-27 | V & M Deutschland Gmbh | High-strength, low-alloy steel for seamless pipes with outstanding weldability and corrosion resistance |
| CN102676941A (en) * | 2012-04-25 | 2012-09-19 | 李小强 | Tungsten carbide particle-reinforced wear-resistant corrosion-resistant stainless steel and preparation method thereof |
| CN103966509A (en) * | 2014-05-29 | 2014-08-06 | 济钢集团有限公司 | Marine environment corrosion-resistant steel plate and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105112777A (en) * | 2015-08-28 | 2015-12-02 | 苏州莱特复合材料有限公司 | Abrasion-resistant iron-based composite material and preparation method thereof |
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Application publication date: 20150311 |