Influence of Deformation-Induced Martensite on Stress Corrosion Cracking of AISI 321 Stainless Steel

被引：0
|
作者：
许淳淳
徐瑞芬
欧阳维真
姜宝文
吴永炘
机构：
[1] Department of Applied Biology & Chemical Technology
[2] Applied Chemistry Department
[3] The Hong Kong Polytechnic University Beijing 100029
[4] Beijing University of Chemical Technology
[5] China
来源：
Chinese Journal of Chemical Engineering | 1998年 / 02期
基金：
中国国家自然科学基金;
关键词：
stress corrosion cracking; martensitc; deformation; AISI 321 stainless steel; boiling 42% MgCl2 solution;
D O I：
暂无
中图分类号：
TG174 [腐蚀的控制与防护];
学科分类号：
080503 ;
摘要：
Specimens of AISI 321 stainless steel(0Cr18Ni9Ti)of various martensite contents were prepared bythe low temperature(-70℃)elongation method.X-ray diffraction(XRD)and transmission electron micrograph(TEM)techniques were used to study the phase transition process and its structure.The relationshio betweendeformation-induced martensite and stress corrosion cracking(SCC)susceptibility of the steel in 42%(boiling)MgClsolution was investigated using the constant load SCC test with the normalized threshold values.The re-sults reveal that when the α’-martensite content is less than 5% and also in the range of 15%-24%,the SCCsusceptibility of this material decreases with the increase of α’-martensite content.However when the α’ martenstiecontent is in the rang of 5%-15% and more than 24%,the SCC susceptibillty of this material increases withthe increase of the α’-martensite content.The SCC fracture surface of the specimens exhibits a stepped fracturesurface and transgranular stress corrosion fracture surf
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页码：40 / 47
页数：8
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