18Mn5Cr护环钢的应力腐蚀开裂  

Stress Corrosion Cracking of 18Mn5Cr Steel for Retaining Ring

作　　者：余荷英[1] 戴一一[1] 赵子伟[1] 

机构地区：[1]上海大学材料科学及工程学院

出　　处：《上海大学学报（自然科学版）》1997年第2期183-187,共5页Journal of Shanghai University:Natural Science Edition

摘　　要：用慢应变速率拉伸试验方法研究了１８Ｍｎ５Ｃｒ护环钢在９０℃去离子水和２２％ＮａＣｌ水溶液以及饱和ＮａＮＯ３水溶液中的应力腐蚀开裂（ＳＣＣ）行为．结果表明，１８Ｍｎ５Ｃｒ钢在三种介质中对ＳＣＣ都较敏感，电位对该钢的ＳＣＣ抗力有明显影响，溶液的ｐＨ值对其影响不大．The stress corrosion cracking (SCC) behavior of 18Mn5Cr steel for retaining ring was studied in aerated water. 22%NaCl solution and saturated NaNO 3 solution at 90℃ by the slow strain rate test. The results showed that 18Mn5Cr steel was susceptible to SCC in above three mediums, the applied potential had obvious effect on SCC resistance, however, the pH value of the solutions did little. The stress intensity factor K ISCC in three mediums was also measured by the cantilever beam bending test.

关 键 词：护环钢 应力腐蚀开裂 拉伸 奥氏体钢 

分 类 号：TG172.9[金属学及工艺—金属表面处理]