金属加工（热加工）Issue(3)：147-150,4.
不锈钢拉杆断裂失效分析
Failure analysis on fracture of stainless steel tie rod
孙润祥1
作者信息
- 1. 北京福田戴姆勒汽车有限公司 北京 101400
- 折叠
摘要
Abstract
The stainless-steel tie rod of a trial-produced vehicle model fractured after being left stationary for 24 hours after assembly.The fracture occurred at the welded joint of the stainless-steel tie rod.The failure causes of the stainless-steel tie rod were analyzed through methods such as macroscopic observation,scanning electron microscopy analysis,chemical composition analysis,metallographic and hardness testing.The results show that the failure mode of the stainless-steel tie rod is hydrogen-induced cracking.The excessively high carbon content in the tie rod material and the appearance of martensite structure in the weld and heat-affected zone during the welding process are the root causes of the hydrogen-induced cracking.关键词
奥氏体不锈钢/氢脆/马氏体/焊接Key words
austenitic stainless steel/hydrogen embrittlement/martensite/welding引用本文复制引用
孙润祥..不锈钢拉杆断裂失效分析[J].金属加工（热加工）,2025,(3):147-150,4.
