CLAM钢TIG焊后的热处理工艺研究  

Study on the heat treatment of CLAM steel joined by TIG

作　　者：乔建生[1] 黄依娜[1] 万发荣[1,2] 

机构地区：[1]北京科技大学材料科学与工程学院材料物理与化学系,北京100083 [2]北京新能源材料与技术重点实验室,北京100083

出　　处：《核科学与工程》2009年第3期239-246,共8页Nuclear Science and Engineering

基　　金：国家自然科学基金项目(50771017);国家重点基础研究发展计划基金项目(2007ID102)

摘　　要：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。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.

关 键 词：CLAM钢 回火 维氏硬度 

分 类 号：TG161[金属学及工艺—热处理] TG444.74[金属学及工艺—金属学]