发明名称 |
TWIP AND NANO-TWINNED AUSTENITIC STAINLESS STEEL AND METHOD OF PRODUCING THE SAME |
摘要 |
The invention relates to a method of producing a TWIP and nano twinned austenitic stainless steel. The austenitic steel should not contain more than 0.018 wt % C, 0.25-0.75 wt % Si, 1.5-2 wt % Mn, 17.80-19.60 wt % Cr, 24.00-25.25 wt % Ni, 3.75-4.85 wt % Mo, 1.26-2.78 wt % Cu, 0.04-0.15 wt % N, and the balance of Fe. In order to form nano twins in the material the austenitic stainless steel should be brought to a temperature below 0° C., and imparted a plastic deformation to such a degree that the desired nano twins are formed, e.g. to a plastic deformation of around 30%. The invention also relates to the thus produced austenitic stainless steel. |
申请公布号 |
US2014328715(A1) |
申请公布日期 |
2014.11.06 |
申请号 |
US201214347711 |
申请日期 |
2012.09.25 |
申请人 |
Magnusson Ulrika;Chai Guocai |
发明人 |
Magnusson Ulrika;Chai Guocai |
分类号 |
C22C38/58;C22C38/44;B21C1/00;C22C38/02;C22C38/00;C22C30/02;C22C38/42 |
主分类号 |
C22C38/58 |
代理机构 |
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代理人 |
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主权项 |
1. A method of producing a TWIP and nano twinned austenitic stainless steel, comprising the steps of:
providing an austenitic stainless steel that contains not more than 0.018 wt % C, 0.25-0.75 wt % Si, 1.5-2 wt % Mn, 17.80-19.60 wt % Cr, 24.00-25.25 wt % Ni, 3.75-4.85 wt % Mo, 1.26-2.78 wt % Cu, 0.04-0.15 wt % N, and the balance of Fe and unavoidable impurities; bringing the austenitic stainless steel to a temperature below 0° C.; and imparting plastic deformation to the austenitic steel at that temperature to an extent that corresponds to a plastic deformation of at least 30% such that nano twins are formed in the material. |
地址 |
Sandviken SE |