Duplex structure stainless steel having high strength and elongation and
a process for producing the steel
    12.
    发明授权
    Duplex structure stainless steel having high strength and elongation and a process for producing the steel 失效
    具有高强度和伸长率的双相结构不锈钢和用于生产钢的方法

    公开(公告)号:US5624504A

    公开(公告)日:1997-04-29

    申请号:US481489

    申请日:1995-07-11

    CPC分类号: C22C38/40 C22C38/32

    摘要: A high strength and elongation stainless steel with a hardness of at least HV is formed of a duplex structure comprising 20% to 95% by volume of martensite having an average grain diameter of not more than 10 .mu.m, with the balance being essentially ferrite, the steel including, by weight, up to 0.10% C, up to 2.0% Si, up to 4.0% Mn, up to 0.040% P, up to 0.010% S, up to 4.0% Ni, from 10.0% to 20.0% Cr, up to 0.12% N, more than 0.0050% to 0.0300% B, up to 0.02% O and up to 4.0% Cu, and optionally contains up to 0.20% A1, up to 3% Mo, up to 0.20% REM, up to 0.20% Y, up to 0.10% Ca, and up to 0.10% Mg, with the balance being Fe and unavoidable impurities.

    摘要翻译: PCT No.PCT / JP94 / 01894 Sec。 371日期:1995年7月11日 102(e)日期1995年7月11日PCT 1994年11月10日PCT PCT。 出版物WO95 / 13405 日期1995年5月18日硬度至少为HV的高强度和伸长率的不锈钢由包含20体积%至95体积%的平均粒径不大于10微米的马氏体的双相结构形成,其余量 基本上是铁素体,钢包括重量百分比高达0.10%的C,高达2.0%的Si,高达4.0%的Mn,高达0.040%的P,高达0.010%的S,高达4.0%的Ni,从10.0% 至20.0%Cr,至多0.12%N,大于0.0050%至0.0300%B,至多0.02%O和至多4.0%Cu,并且任选地含有至多0.20%的Al,至多3%的Mo,至多0.20 %REM,至多0.20%Y,至多0.10%Ca,至多0.10%Mg,余量为Fe和不可避免的杂质。