基本信息:
- 专利标题: METHOD FOR PRODUCING HIGH-STRENGTH DUPLEX STAINLESS STEEL
- 专利标题(中):生产高强度双相不锈钢的方法
- 申请号:PCT/FI2014/050978 申请日:2014-12-10
- 公开(公告)号:WO2015086903A1 公开(公告)日:2015-06-18
- 发明人: OLIVER, James , ANDERSSON, Jan-Olof , SCHEDIN, Erik
- 申请人: OUTOKUMPU OYJ
- 申请人地址: Riihitontuntie 7 FI-02200 Espoo FI
- 专利权人: OUTOKUMPU OYJ
- 当前专利权人: OUTOKUMPU OYJ
- 当前专利权人地址: Riihitontuntie 7 FI-02200 Espoo FI
- 代理机构: OUTOKUMPU OYJ
- 优先权: FI20136257 20131213; FI20145573 20140617
- 主分类号: C21D6/00
- IPC分类号: C21D6/00 ; C21D7/02 ; C21D8/00 ; C22C38/40 ; C21D8/02
摘要:
The invention relates to a method for producing a high-strength ferritic austenitic duplex stainless steel with the TRIP (Transformation induced plasticity) effect with deformation. After the heat treatment on the temperature range of 950 –1150˚C in order to have high tensile strength level of at least 1000 MPa with retained formability the ferritic austenitic duplex stainless steel is deformed with a reduction degree of at least 10%, preferably at least 20% so that with a reduction degree of 20% the elongation (A 50 ) is at least 15%.
摘要(中):
本发明涉及一种具有TRIP(变形诱导塑性)变形效应的高强度铁素体奥氏体双相不锈钢的制造方法。 在950〜1150℃的温度范围内进行热处理之后,为了具有至少1000MPa的高拉伸强度水平并保持成形性,铁素体奥氏体双相不锈钢以至少10%的还原度变形,优选在 至少20%,以减少20%的伸长率(A50)为至少15%。