发明名称 |
METHOD OF PRODUCING STAINLESS STEELS HAVING IMPROVED CORROSION RESISTANCE |
摘要 |
<p>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: PREN = Cr + (3.3 x Mo) + (30 x N), 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.</p> |
申请公布号 |
WO02086172(A1) |
申请公布日期 |
2002.10.31 |
申请号 |
WO2002US12115 |
申请日期 |
2002.04.18 |
申请人 |
ATI PROPERTIES, INC.;GRUBB, JOHN, F.;FRITZ, JAMES, D. |
发明人 |
GRUBB, JOHN, F.;FRITZ, JAMES, D. |
分类号 |
C22B9/16;C21D1/09;C21D1/26;C21D1/34;C21D6/00;C21D8/00;C22B9/18;C22B9/20;C22B9/22;C22C38/00;C22C38/44;C22C38/58;F28F21/08;(IPC1-7):C21D8/00;C21D9/00;C22C19/05;C22C28/00 |
主分类号 |
C22B9/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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