CAJ | 학술논문

为了解决利用钨极氩弧(TIG)焊方法焊接的CLAM钢在焊缝区存在的强度、硬度增加而韧性减弱的问题,从回火温度、回火时间以及重复回火等方面研究了回火对焊缝区硬度的影响,得到了回火温度选择为760℃、回火时间选择为2 h和在760℃保温1 h回火,重复进行两次的两种最佳热处理工艺.
위료해결이용오겁아호(TIG)한방법한접적CLAM강재한봉구존재적강도、경도증가이인성감약적문제,종회화온도、회화시간이급중복회화등방면연구료회화대한봉구경도적영향,득도료회화온도선택위760℃、회화시간선택위2 h화재760℃보온1 h회화,중복진행량차적량충최가열처리공예.
Vickers hardness of the weld metal was bigger than Vickers hardness of the base metal in the China low activation martensitic (CLAM) steel which was joined by tungsten inert gas (TIG) welding. To reduce Vickers hardness of the weld metal, the specimen was tempered at different temperature for different time. Also the specimen was repeated tempering at 760 ℃ for one hour. Vickers hardness of the weld metal was the same as Vickers hardness of the base metal after tempering at 760℃ for two hours and tempering at 760 ℃ for one hour twice.