论文标题
晶体氯化物诱导的应激腐蚀裂纹裂纹的弧形焊接的弧形奥氏体不锈钢的晶体学影响
Crystallographic effects on transgranular chloride-induced stress corrosion crack propagation of arc welded austenitic stainless steel
论文作者
论文摘要
沿裂缝路径沿裂缝> 300粒，研究了晶体氯化物诱导的应激腐蚀裂纹（TGCISCC）的影响。 Schmid和Taylor因子跨晶界（GBS）的不匹配表明，裂缝从难以通过机械参数或软晶粒而繁殖。在后一种情况下，有限元分析表明，TGCISCC将在GBS上停滞，而没有足够的机械应力，有利的晶体学取向或裂纹尖端腐蚀。 GB类型在确定TGCISCC开裂行为或易感性方面不起作用。在机械，晶体学和腐蚀因子之间竞争的背景下，讨论了GBS的TGCISCC裂纹行为。
The effect of crystallography on transgranular chloride-induced stress corrosion cracking (TGCISCC) of arc welded 304L austenitic stainless steel is studied on >300 grains along crack paths. Schmid and Taylor factor mismatches across grain boundaries (GBs) reveal that cracks propagate either from a hard to soft grain, which can be explained merely by mechanical arguments, or soft to hard grain. In the latter case, finite element analysis reveals that TGCISCC will arrest at GBs without sufficient mechanical stress, favorable crystallographic orientations, or crack tip corrosion. GB type does not play a significant role in determining TGCISCC cracking behavior nor susceptibility. TGCISCC crack behaviors at GBs are discussed in the context of the competition between mechanical, crystallographic, and corrosion factors.
