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. 摘要為了克服多道搭接激光熔覆層的開裂問題，分析了熔覆層與基體材料之間的力學關係，建立了激光熔覆層殘餘應力測試方法，推導了殘餘應力的計算公式。
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