镁合金表面激光熔覆Fe合金  

Laser Cladding of Fe Alloy on Surface of Magnesium Alloy

作　　者：张仁[1] 肖泽辉[1] 

机构地区：[1]湘潭大学机械工程学院,湖南湘潭411105

出　　处：《热加工工艺》2009年第18期90-92,95,共4页Hot Working Technology

基　　金：湖南省教育厅青年项目(05B005)

摘　　要：采用热喷涂+激光重熔两步法工艺对镁合金表面进行激光熔覆Fe-Ni-Cr-B-Si合金;对熔覆层进行了微观分析及性能测试。结果表明:熔覆层主要由FeCr、FeNi和AlNi3等相组成,熔覆层的显微硬度、耐腐蚀性及耐磨损性能都明显高于基体。Laser cladding of Fe-Ni-Cr-B-Si alloy on AZ91D alloy surface was achieved by two-step method, i.e. thermal spraying and laser re-melting. The microstructure and properties of cladding layer were investigated. The resutls show that the surface layer is composed of phases of FeCr, FeNi and AlNi3. The micro-hardness, wear properties and corrosion resistance are considerably improved as compared to the matrix.

关 键 词：两步法 激光熔覆 显微硬度 耐腐蚀性能 耐磨损性能 

分 类 号：TG156.99[金属学及工艺—热处理]