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本文的目的主要有三方面：（１）研究４５ｋＷ高功率ＣＯ_２激光大面积合金化的性能；（２）在廉价并广泛应用的普通碳钢ＸＣ３８（法国牌号）表面获取面向工业应用的功能性大面积合金化层；（３）研究保护气体对合金化过程和微观组织的影响机制。在尺寸为２００×１４０×２０
The main purpose of this paper is to: (1) study the performance of large-area alloying of 45kW high-power CO_2 laser; (2) obtain the large area of functional large area for industrial applications on the cheap and widely used plain carbon steel XC38 (French grade) Alloyed layer; (3) study protective gas on the alloying process and microstructure impact mechanism. The size is 200 × 140 × 20