Corrosion resistant article and methods of making

    公开(公告)号:US10179943B2

    公开(公告)日:2019-01-15

    申请号:US14334742

    申请日:2014-07-18

    摘要: An article and method of forming the article are disclosed. The article has a surface comprising a nanostructured ferritic alloy. The surface includes a plurality of nanofeatures that include complex oxides of yttrium and titanium disposed in an iron-bearing alloy matrix. The iron-bearing alloy matrix at the surface includes about 5 weight percent to about 30 weight percent of chromium, and about 0.1 weight percent to about 10 weight percent of molybdenum. Further, a concentration of a chi phase or a sigma phase in the nanostructured ferritic alloy at the surface is less than about 5 volume percent. The method generally includes the steps of milling, thermo-mechanically consolidating, annealing, and then cooling at a rate that hinders the formation of chi and sigma phases in the nanostructured ferritic alloy at the surface.

    CORROSION RESISTANT STEEL COMPOSITION
    5.
    发明申请
    CORROSION RESISTANT STEEL COMPOSITION 审中-公开
    耐腐蚀钢组合物

    公开(公告)号:US20140170015A1

    公开(公告)日:2014-06-19

    申请号:US13716334

    申请日:2012-12-17

    CPC分类号: C22C38/02

    摘要: A steel composition resistant to sulfidic corrosion has been discovered. The newly discovered steel composition comprises the elements Fe, C, Si, Cu, and Mn wherein the composition comprises from about 96.80 to about 99.00 percent by weight iron, from about 0.10 to about 0.30 percent by weight carbon, from about 0.20 to about 1.40 percent by weight silicon, from about 0.50 to about 1.50 percent by weight copper, and from about 0.20 to about 1.00 percent by weight manganese, wherein the composition is substantially free of chromium, and wherein the composition contains less than 0.1 percent by weight nickel, molybdenum, or tungsten.

    摘要翻译: 已经发现了耐硫化物腐蚀的钢组合物。 新发现的钢组合物包含元素Fe,C,Si,Cu和Mn,其中组合物包含约96.80至约99.00重量%的铁,约0.10至约0.30重量%的碳,约0.20至约1.40 重量百分比的硅,约0.50至约1.50重量%的铜和约0.20至约1.00重量%的锰,其中所述组合物基本上不含铬,并且其中所述组合物含有小于0.1重量%的镍, 钼或钨。