Ferrite-austenite stainless steel castings having an improved
erosion-corrosion resistance
    1.
    发明授权
    Ferrite-austenite stainless steel castings having an improved erosion-corrosion resistance 失效
    铁素体 - 奥氏体不锈钢铸件具有改善的抗腐蚀性能

    公开(公告)号:US4101347A

    公开(公告)日:1978-07-18

    申请号:US794334

    申请日:1977-05-06

    IPC分类号: C22C38/42 C22C38/44

    CPC分类号: C22C38/42 C22C38/44

    摘要: Ferrite-austenite stainless steel castings having an improved erosion-corrosion resistance consist by weight percentage of not more than 0.1% of C, 0.2-3% of Si, not more than 2% of Mn, 2.2-4% of Cu, 3-9% of Ni, 20-30% of Cr, 2-6% of Mo, 0.08-0.25% of N, 0.12-0.3% of Sn, at least one of 0-2% of Nb, 0-1% of Ti, 0-2% of Ta, 0-1% of Zr and 0-1.5% of V and remainder of Fe, and are obtained by solution heat treatment at 1,000.degree.-1,150.degree. C in such a manner that Cr- and Ni-equivalents lie within an area represented by the area ABCD shown in FIG. 1 of the accompanying drawings.

    摘要翻译: 具有改善的耐侵蚀腐蚀性的铁素体 - 奥氏体不锈钢铸件的重量百分比不超过C的0.1%,Si:0.2-3%,不超过2%的Mn,2.2-4%的Cu,3- 9%的Ni,20-30%的Cr,2-6%的Mo,0.08-0.25%的N,0.12-0.3%的Sn,0-2%的Nb中的至少一种,0-1%的Ti ,0-2%的Ta,0-1%的Zr和0-1.5%的V以及余量的Fe,并且通过在1000°-1,150℃下固溶热处理得到Cr-和Ni- 等同物位于由图1所示的区域ABCD表示的区域内。 附图1。