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Method for improving corrosion resistance of a stainless steel comprising an austenite phase and the articles thereof

机译:改善包含奥氏体相的不锈钢的耐腐蚀性的方法及其制品

摘要

A method for producing a stainless steel with improved corrosion resistance includes homogenizing at least a portion of an article of a stainless steel including chromium, nickel, and molybdenum and having a PREN of at least 50, as calculated by the equation:where Cr is weight percent chromium, Mo is weight percent molybdenum, and N is weight percent nitrogen in the steel. In one form of the method, at least a portion of the article is remelted to homogenize the portion. In another form of the method, the article is annealed under conditions sufficient to homogenize at least a surface region of the article. The method of the invention enhances corrosion resistance of the stainless steel as reflected by the steel's critical crevice corrosion temperature.
机译:生产具有改善的耐腐蚀性的不锈钢的方法包括均质化至少一部分不锈钢制品,包括铬,镍和钼,且其PREN至少为50,如以下等式所计算:Cr为重量铬,Mo是钼的重量百分比,N是钢中氮的重量百分比。在该方法的一种形式中,将制品的至少一部分重新熔融以均化该部分。在该方法的另一形式中,在足以使制品的至少表面区域均质的条件下对制品进行退火。本发明的方法增强了不锈钢的耐腐蚀性,这由钢的临界缝隙腐蚀温度反映出来。

著录项

  • 公开/公告号KR100636454B1

    专利类型

  • 公开/公告日2006-10-18

    原文格式PDF

  • 申请/专利权人

    申请/专利号KR20037013823

  • 申请日2003-10-23

  • 分类号C22C38/44;

  • 国家 KR

  • 入库时间 2022-08-21 21:22:47

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