钴基合金堆焊层裂纹成因及控制措施  

Causes and Control Measures of Cracks on Co-based Alloy Overlay

作　　者：张铧斌 徐磊[1] 俞雄军 ZHANG Huabin;XU lei;YU Xiongjun(School of Material Science and Technology,Xihua University,Chengdu 610039 China;Framatome-dongfang Coolant Pump Co.,Ltd.,Deyang 618000 China)

机构地区：[1]西华大学材料科学与工程学院,四川成都610039 [2]东方法马通核泵有限责任公司,四川德阳618000

出　　处：《西华大学学报(自然科学版)》2025年第3期75-86,共12页Journal of Xihua University:Natural Science Edition

基　　金：四川省科技成果转化项目(2013HC0006)。

摘　　要：钴基合金是一种有着特殊组织结构和优异性能的材料,在各行业中有着广泛的应用,但由于其焊接工艺性能存在不足,加工和应用中易出现各类缺陷,其中以焊接裂纹最为明显,对设备的正常运行影响最大。本文为分析钴基合金焊接裂纹出现的规律,对钴基合金堆焊层裂纹的典型案例和工程应用进行讨论,重点阐述钴基合金裂纹的形成机理和常见原因,并基于工程案例分析和归纳对裂纹进行有效控制的措施。Co-based alloy is of a special microstructure with excellent properties so as to be widely used in various industries.However,different defects on Co-based alloy overlay have been reported while welding or operate an equipment with Co-based alloy because of a poor weldability from this alloy,one of which is the cracks.The cracks have been proved to show a most negative impact on an equipment.This pa-per is developed to study the crack morphology and its causes.Thus some miscellaneous cases on Co-based alloy were specially analyzed and described,and the typical basic laws and usual methodology causes were raised and finally some suggestions to limit the cracks on Co-based alloy overlay were summarized.

关 键 词：钴基合金 耐磨合金 堆焊层 热裂纹 冷裂纹 

分 类 号：TG455[金属学及工艺—焊接]