1Cr18Ni9Ti不锈钢在氯化物溶液中SCC敏感性与铁磁相含量的相关性  

AN INVESTIGATION OF THE RELATIONSHIP BETWEEN SCC SUSCEPTIBILITY AND FERRIMAGNETIC CONTENT OF 1Cr18Ni9Ti STAINLESS STEEL IN CHLORIDE SOLUTION

作　　者：许淳淳[1] 欧阳维真[1] 徐瑞芬[1] 吴永炘[2] 

机构地区：[1]北京化工大学,北京100029 [2]香港理工大学

出　　处：《中国腐蚀与防护学报》1997年第1期73-76,共4页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金资助项目;金属腐蚀与防护国家重点实验室资助项目

摘　　要：通过低温(-70℃)拉伸制备不同铁磁相含量的1Cr18Ni9Ti不锈钢,采用慢应变速率方法(SSRT)研究其在含CI^-介质中的SCC敏感性,用SEM进行断口分析。结果表明:铁磁相含量小于5％和在16～25％范围内,SCC敏感性随铁磁相含量增大不断下降;铁磁相含量在5～16％及大于25％时,材料的SCC敏感性随铁磁相含量增加而增大。The effect of deformation-induced martensite (ferrimagnetic phase) on stress corrosion cracking of 1Crl8Ni9Ti stainless steel was investigated. Low temperature (-70℃) elongation method was used to obtain specimens with various martensite contents. SSRT was applied to investigate SCC susceptibility. Fracture morphology was observed with SEM. The results showed that when the content of ferrimagnetic phase was less than 5% or in the range of 16-25%, the SCC susceptibility of the material decresed with the increasing ferrimagnetic phase content. However, when the content of ferrimagnetic phase was in the range of 5-16% or more than 25%, its SCC susceptibility increased with the increasing ferrimagnetic phase content.

关 键 词：SCC敏感性 铁磁相 氯化物溶液 不锈钢 

分 类 号：TG142.71[一般工业技术—材料科学与工程]