1. School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China; 2. Institute of Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China
Evaluation of Cracking Resistance of Copper��Bearing Age Hardening Steel Weldment
1. School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China; 2. Institute of Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China
ժҪ 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 �� 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.
Abstract��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 �� 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.
CHAI Feng;YANG Cai��fu;SU Hang;ZHANG Yong��quan;XU Zhou. Evaluation of Cracking Resistance of Copper��Bearing Age Hardening Steel Weldment[J]. �й������ڿ���, 2007, 14(3): 56-0.
CHAI Feng;YANG Cai��fu;SU Hang;ZHANG Yong��quan;XU Zhou. Evaluation of Cracking Resistance of Copper��Bearing Age Hardening Steel Weldment. Chinese Journal of Iron and Steel, 2007, 14(3): 56-0.
2007, Vol. 14 
