Hydrogen-induced Cracking of Weld Metal of Austenitic Stainless Steels

被引：0

作者：

Chuan PAN Zhengbang LI Zhiling TIAN and Dongtu LIANGDepartment of Welding Research Central Iorn Steel Research Institute Beijing ChinaLijie QIAO and Wuyang CHUDepartment of Materials Physics University of Science Technology Beijing Beijin ^{[10081
]}

机构：

来源：

Journal of Materials Science & Technology | 2002年 / 04期

关键词：

Austenitic stainless steel; Hydrogen induced cracking; Fracture;

D O I：

暂无

中图分类号：

TG407 [焊接接头的力学性能及其强度计算];

学科分类号：

080201 ; 080503 ;

摘要：

<正>For 308L and 347L weld metals of austenitc stainless steels (ASS), hydrogen induced cracking (HIC) occurred during dynamically charging under constant load. The threshold stress intensity for HIC, Km, decreased linearly with the logarithm of the concentration of diffusible hydrogen C0 in the weld metals and the rolled plate of type 304L ASS, i.e., KIH=85.2-10.71nC0 (308L), KIH=76.1-9.31n C0(347L), and KIH=91.7-10.11nC0(304L). The fracture mode for HIC in the three type of ASS changed from ductile to brittle with the decrease in the applied stress intensity KI or/and the increase in C0. The boundary line between ductile and brittle fracture surfaces was KI-54+25exp(-C0/153)=0.

引用

页码：375 / 377

页数：3