n.多道
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. 摘要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。
