发明申请
US20100294402A1 FERRITE-AUSTENITE STAINLESS STEEL SHEET FOR STRUCTURAL COMPONENT EXCELLENT IN WORKABILITY AND IMPACT-ABSORBING PROPERTY AND METHOD FOR PRODUCING THE SAME 有权
用于结构性组分的非铁素体不锈钢板,其工作性能和冲击吸收性能优良,并且其生产方法

  • 专利标题: FERRITE-AUSTENITE STAINLESS STEEL SHEET FOR STRUCTURAL COMPONENT EXCELLENT IN WORKABILITY AND IMPACT-ABSORBING PROPERTY AND METHOD FOR PRODUCING THE SAME
  • 专利标题(中): 用于结构性组分的非铁素体不锈钢板,其工作性能和冲击吸收性能优良,并且其生产方法
  • 申请号: US12735476
    申请日: 2009-01-22
  • 公开(公告)号: US20100294402A1
    公开(公告)日: 2010-11-25
  • 发明人: Junichi HamadaHaruhiko KajimuraEiichiro Ishimaru
  • 申请人: Junichi HamadaHaruhiko KajimuraEiichiro Ishimaru
  • 优先权: JP2008-011984 20080122; JP2009-006046 20090114
  • 国际申请: PCT/JP2009/050966 WO 20090122
  • 主分类号: C21D6/00
  • IPC分类号: C21D6/00 C22C38/58
FERRITE-AUSTENITE STAINLESS STEEL SHEET FOR STRUCTURAL COMPONENT EXCELLENT IN WORKABILITY AND IMPACT-ABSORBING PROPERTY AND METHOD FOR PRODUCING THE SAME
摘要:
This stainless steel sheet includes, in terms of mass %, C: 0.001 to 0.1%, N: 0.01 to 0.15%, Si: 0.01 to 2%, Mn: 0.1 to 10%, P: 0.05% or less, S: 0.01% or less, Ni: 0.5 to 5%, Cr: 10 to 25%, and Cu: 0.5 to 5%, with a remainder being Fe and unavoidable impurities, and contains a ferrite phase as a main phase and 10% or more of an austenite phase, wherein a work-hardening rate in a strain range of up to 30% is 1000 MPa or more which is measured by a static tensile testing and a difference between static and dynamic stresses which occur when 10% of deformation is caused is 150 MPa or more. This method for producing a stainless steel includes annealing a cold-rolled steel sheet under conditions where a holding temperature is set to be in a range of 950 to 1150° C. and a cooling rate until 400° C. is set to be in a range of 3° C./sec or higher.
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