CN101693983A - Resource saving type austenite stainless steel with low chrome content, low nickel content and high Mn-N content and preparation method thereof - Google Patents
Resource saving type austenite stainless steel with low chrome content, low nickel content and high Mn-N content and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a resource saving type austenite stainless steel with low chrome content, low nickel content and high Mn-N content, which comprises the following components by weight percent: 0.01-0.07 percent of C, 9.0-12.0 percent of Mn, 0.1-0.9 percent of Si, not more than 0.030 percent of P, not more than 0.030 percent of S, 15.0-17.0 percent of Cr, 1.0-3.0 percent of Ni, 0.5-1.5 percent of Cu, 0.10-0.30 percent of N, 0.01-0.2 percent of Re( Ce or Y) and the balance of Fe and unavoidable impurities. A preparation method of the austenite stainless steel is characterized by adopting a traditional melting process of conventional nitrogen-containing stainless steel and adopting a pure iron tube sealing rare-earth preliminary alloy batch charging method for batch charging. The resource saving type austenite stainless steel with low chrome content, low nickel content and high manganese and nitrogen content has excellent corrosion resistant performance and favorable cold machining property, and is a stainless steel alloy material with high manganese and nitrogen content, widely potential usage and low cost.
Description
Technical field
The present invention relates to high Mn-N austenitic stainless steel of a kind of resource-conserving low chrome content, low nickel and preparation method thereof, belong to steel and alloy material technology field.
Background technology
The main component of austenitic stainless steel is chromium, nickel, molybdenum, and wherein nickel than expensive; The rise of nickel valency and big ups and downs have not only improved the cost of stainless steel production and application, and have brought new challenge for the Sustainable development of stainless steel industry.In order to reduce cost, reduce the content of nickel in the steel, can adopt the content that increases manganese, nitrogen and copper.The reduction of nickel content can reduce the influence of prices of raw and semifnished materials fluctuation to stainless steel market.In recent years, because the novel stainless steel kind of joint nickel should be studied, produces and be promoted to metallic nickel price increase and fluctuation in order to reduce cost and to reduce the influence that prices of raw and semifnished materials fluctuation is caused, energetically, the scientific research personnel has done number of research projects in this respect.
Summary of the invention
The object of the present invention is to provide a kind of low cost and have good corrosion resistance and the economical austenitic stainless steel alloy material of cold-workability.
Purpose of the present invention realizes by following technical proposals.
The high Mn-N austenitic stainless steel of a kind of resource-conserving low chrome content, low nickel, it is characterized in that, represent with mass percent, the chemical constitution of this steel is: C0.01～0.07%, Mn 9.0～12.0%, Si 0.1～0.9%, P≤0.030%, S≤0.030%, Cr15.0～17.0%, Ni 1.0～3.0%, Cu0.5～1.5%, N 0.10～0.30%, Re (Ce or Y) 0.01～0.2%, Yu Tie and inevitable impurity.
The preparation method of the economical stainless steel alloy material of the present invention, it is characterized in that: the smelting process that adopts traditional conventional nitrogen-contained stainless steel, adopt pure iron seal of tube rare earth intermediate alloy throw-in play when feeding intake, master alloy is iron-rare earth alloy, i.e. Fe-Ce alloy or Fe-Y alloy; Ce content in the Fe-Ce alloy is 23.5wt%, and the Y content in the Fe-Y alloy is 15wt%.Low nickel and high manganese of the present invention, nitrogen resource-conserving austenitic stainless steel have good solidity to corrosion and excellent cold-workability, are a kind of low-cost Gao Meng, nitrogen stainless steel alloy materials with potential extensive use.Its room temperature tensile breaking tenacity is in 650～850Mpa scope after 1050～1150 ℃ of solution treatment water-cooleds for steel in this composition range, and yield strength is in 350～550Mpa scope, and tension set is greater than 35%.
Mechanism of the present invention is as described below:
Can replace nickel and the rare earth action principle in steel according to manganese and nitrogen, find,, thereby reduce the consumption of valuable nickel with proper amount of cheap manganese, nitrogen and the copper austenite in can stabilized steel through a large amount of experimental studies; After adding Rare-Earth Ce or Y simultaneously in this Stainless Steel Alloy, the sulphur content in the alloy reduces or forms dystectic rare-earth sulfide disperse greatly in matrix, has avoided low melting point sulfide to be present on the phase boundary, thereby has improved the processing characteristics of steel effectively.
Embodiment
After now specific embodiments of the invention being described in.
Embodiment 1
In the present embodiment, adopt the composition and the mass percent of duplex stainless steel as follows:
Cr 16.5％
Mn 11.6％
Ni 2.3％
N 0.25％
Cu 1.3％
C 0.051％
Rare-Earth Ce 0.10%
Si 0.8％
S 0.005％
P 0.011％
The Fe surplus
Adopt the smelting process of traditional conventional nitrogen-contained stainless steel, adopt pure iron seal of tube rare earth intermediate alloy throw-in play when feeding intake, master alloy is the Fe-Ce alloy, and wherein Ce content is 23.5wt%.Calculate and after batching founded, casting finally made stainless steel alloy material through comprehensive metering.As cast condition is through forge hot, hot rolling, 1100 ℃ of solution treatment afterwards, and its room temperature tensile breaking tenacity is greater than 700MPa, and yield strength is greater than 400MPa, and tension set is greater than 35%.
Embodiment 2
In the present embodiment, adopt the composition and the weight percent of duplex stainless steel as follows:
Cr 15.8％
Mn 10.4％
Ni 2.1％
N 0.20％
Cu 1.2％
C 0.031％
Rare-Earth Ce 0.10%
Si 0.6％
S 0.004％
P 0.012％
The Fe surplus
Adopt the smelting process of traditional conventional nitrogen-contained stainless steel, adopt pure iron seal of tube rare earth intermediate alloy throw-in play when feeding intake, master alloy is the Fe-Ce alloy, and wherein Ce content is 23.5wt%.Calculate and after batching founded, casting finally made stainless steel alloy material through comprehensive metering.As cast condition is through forge hot, hot rolling, 1100 ℃ of solution treatment afterwards, and its room temperature tensile breaking tenacity is greater than 650MPa, and yield strength is greater than 350MPa, and tension set is greater than 40%.
Embodiment 3
In the present embodiment, adopt the composition and the weight percent of duplex stainless steel as follows:
Cr 15.3％
Mn 9.4％
Ni 1.8％
N 0.17％
Cu 0.9％
C 0.042％
Rare-Earth Ce 0.10%
Si 0.5％
S 0.007％
P 0.014％
The Fe surplus
Adopt the smelting process of traditional conventional nitrogen-contained stainless steel, adopt pure iron seal of tube rare earth intermediate alloy throw-in play when feeding intake, master alloy is the Fe-Ce alloy, and wherein Ce content is 23.5wt%.Calculate and after batching founded, casting finally made stainless steel alloy material through comprehensive metering.As cast condition is through forge hot, hot rolling, 1100 ℃ of solution treatment afterwards, and its room temperature tensile breaking tenacity is greater than 650MPa, and yield strength is greater than 350MPa, and tension set is greater than 45%.The resistance to corrosion of such material is roughly suitable with austenite 300 series, and mechanical property is better than austenite 300 series, can be used as aspects such as automobile, general instruments engineering, is the optimal candidate material of replacing 300 series, can reduce material cost significantly.
Claims (2)
1. high Mn-N austenitic stainless steel of resource-conserving low chrome content, low nickel, it is characterized in that, represent with mass percent, the chemical constitution of this steel is: C0.01～0.07%, Mn 9.0～12.0%, Si 0.1～0.9%, P≤0.030%, S≤0.030%, Cr 15.0～17.0%, Ni 1.0～3.0%, Cu0.5～1.5%, N 0.10～0.30%, Re (Ce or Y) 0.01～0.2%, Yu Tie and inevitable impurity.
2. preparation method who is used for the described austenitic stainless steel of claim 1, it is characterized in that, this method adopts the melting technology of traditional conventional nitrogen-contained stainless steel, when feeding intake, adopt pure iron seal of tube rare earth intermediate alloy input, master alloy is iron-rare earth alloy, i.e. Fe-Ce alloy or Fe-Y alloy; Ce content in the Fe-Ce alloy is 23.5wt%, and the Y content in the Fe-Y alloy is 15wt%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910196570A CN101693983A (en) | 2009-09-27 | 2009-09-27 | Resource saving type austenite stainless steel with low chrome content, low nickel content and high Mn-N content and preparation method thereof |
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| CN200910196570A CN101693983A (en) | 2009-09-27 | 2009-09-27 | Resource saving type austenite stainless steel with low chrome content, low nickel content and high Mn-N content and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966527A (en) * | 2014-04-29 | 2014-08-06 | 宝钢不锈钢有限公司 | Austenitic stainless steel for urban rail vehicle face plates and manufacturing method of austenitic stainless steel |
| CN105200339A (en) * | 2015-09-18 | 2015-12-30 | 江苏省利金新材科技有限公司 | High-nitrogen abrasion-resistant stainless steel griddle wire processing technology |
| CN109112431A (en) * | 2018-10-10 | 2019-01-01 | 温州市安硕新材料有限公司 | A kind of deep-draw molding magnetism-free stainless steel cold-reduced sheet and preparation method |
| CN110499475A (en) * | 2019-08-19 | 2019-11-26 | 广东省材料与加工研究所 | A kind of austenitic heat-resistance steel and its preparation method and application |
| CN110607479A (en) * | 2019-04-24 | 2019-12-24 | 上海大学 | Stainless steel for valve spring and preparation method of steel wire of stainless steel |
| CN114875342A (en) * | 2021-02-05 | 2022-08-09 | 上海卫图科技有限公司 | Nickel-saving civil air defense stainless steel |
| CN115234139A (en) * | 2022-07-28 | 2022-10-25 | 广东中安人防股份有限公司 | Novel nickel-saving stainless steel protective civil air defense door and manufacturing method thereof |
-
2009
- 2009-09-27 CN CN200910196570A patent/CN101693983A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966527A (en) * | 2014-04-29 | 2014-08-06 | 宝钢不锈钢有限公司 | Austenitic stainless steel for urban rail vehicle face plates and manufacturing method of austenitic stainless steel |
| CN105200339A (en) * | 2015-09-18 | 2015-12-30 | 江苏省利金新材科技有限公司 | High-nitrogen abrasion-resistant stainless steel griddle wire processing technology |
| CN109112431A (en) * | 2018-10-10 | 2019-01-01 | 温州市安硕新材料有限公司 | A kind of deep-draw molding magnetism-free stainless steel cold-reduced sheet and preparation method |
| CN109112431B (en) * | 2018-10-10 | 2022-09-09 | 温州市安硕新材料有限公司 | Nonmagnetic stainless steel cold-rolled sheet for deep drawing forming and preparation method thereof |
| CN110607479A (en) * | 2019-04-24 | 2019-12-24 | 上海大学 | Stainless steel for valve spring and preparation method of steel wire of stainless steel |
| CN110607479B (en) * | 2019-04-24 | 2021-11-05 | 上海大学 | Stainless steel for valve spring and preparation method of steel wire of stainless steel |
| CN110499475A (en) * | 2019-08-19 | 2019-11-26 | 广东省材料与加工研究所 | A kind of austenitic heat-resistance steel and its preparation method and application |
| CN110499475B (en) * | 2019-08-19 | 2020-07-28 | 广东省材料与加工研究所 | Austenitic heat-resistant steel and preparation method and application thereof |
| CN114875342A (en) * | 2021-02-05 | 2022-08-09 | 上海卫图科技有限公司 | Nickel-saving civil air defense stainless steel |
| CN115234139A (en) * | 2022-07-28 | 2022-10-25 | 广东中安人防股份有限公司 | Novel nickel-saving stainless steel protective civil air defense door and manufacturing method thereof |
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Open date: 20100414 |