Evaluation of cracking resistance of copper-bearing age hardening steel weldment

被引:0
|
作者
Chai Feng [1 ]
Yang Cai-fu
Su Hang
Zhang Yong-quan
Xu Zhou
机构
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China
[2] Cent Iron & Steel Res Inst, Inst Struct Mat, Beijing 100081, Peoples R China
关键词
copper-bearing age hardening steel; weldability; cracking resistance; Y-groove cracking test;
D O I
暂无
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The weldability of a low-carbon copper-bearing age hardening steel was evaluated using cracking susceptibility calculation, HAZ maximum hardness measurement, and Y-groove cracking evaluation test. The results show that the hardenability characteristics and cold cracking susceptibility of the steel are very low. The results also indicate that a crack-free weldment can be obtained during the welding of this type of steel even at an ambient temperature as low as - 5 degrees C as well as in an absolute humidity lower than 4 000 Pa without any preheat treatment. A slight preheat treatment can prevent the joint from cracking when welding is carried out at lower ambient temperature or higher absolute humidity.
引用
收藏
页码:56 / 62
页数:7
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