时效处理对904L超级奥氏体不锈钢腐蚀性能的影响  

Influence of Aging Treatment on Corrosive Property of 904L Super-austenitic Stainless Steel

作　　者：孙晓刚[1] 

机构地区：[1]太原钢铁(集团)有限公司,山西太原030003

出　　处：《山西冶金》2014年第5期24-25,共2页Shanxi Metallurgy

摘　　要：利用电化学方法研究了904L超级奥氏体不锈钢不同时效下腐蚀性能的变化情况。研究结果表明:904L超级奥氏体不锈钢发生钝化时,致钝电流密度小,电位范围广,因此它容易获得钝化,这主要与904L含有较高含量的Cr、Mo合金元素有关;随着时效温度逐渐接近钢的析出敏感温度以及随着时效时间的延长,904L超级奥氏体不锈钢耐腐蚀性能明显下降。The changes of corrosion properties on different aging treatment state 904L super austenitic stainless steel is studied by electrochemical method. While passivation of 904L super-anstenitic stainless steel is occurred, the passive current density is small, and potential range is wide. Because Cr, Mo alloy elements of 904L is higher, it is easy to obtain the passivation. When temperature of precipitation sensitive is closed to temperature of aging and is increasing with time, the corrosion resistance is significantly decreased.

关 键 词：超级奥氏体不锈钢 析出相 腐蚀性能 

分 类 号：TG142.25[一般工业技术—材料科学与工程]