摘要
用ＳＳＲＴ和电化学方法研究了３０４不锈钢在酸性氯化物溶液中的应力腐蚀与形变诱发马氏体的关系．结果表明形变诱发马氏体相不仅有利于应力腐蚀裂纹的形核而且它的选择性溶解构成了裂纹扩展的活性通道．文中讨论了裂纹沿马氏体相扩展的机制．
tudies were conducted on the stress corrosion craCking of type 304 austenitic stainless steel in acidic chloride solutions at ambient temperature by SSRT technique.Martensite etching technique and TEM were used to detect the presence of martensite phase and to relate stress corrosion craCking withthe martensite formation.The obserwtions showed that the deformation induced martensite promoted not only the initiation of stress corrosion cracks but also subsequent propagation of the cracks through martensite phase by its selective corrosion.The possible mechanism of crack propagation through the martensite phase was discussed according to the results of electrochemical measurements.
出处
《中国腐蚀与防护学报》
CAS
CSCD
1994年第4期277-282,共6页
Journal of Chinese Society For Corrosion and Protection
关键词
不锈钢
应力腐蚀开裂
马氏体
相变
stainless steel
Stress corrosion cracking
Deformation induced martensite
Acidic chloride solution
