In order to study cracking problem in multitrack laser-clad coating,model and method to measure the residual stress distributed along depth of laser-clad coating are established.

• 为了克服多道搭接激光熔覆层的开裂问题,分析了熔覆层与基体材料之间的力学关系,建立了激光熔覆层残余应力测试方法,推导了残余应力的计算公式。