镁合金AZ91D激光熔覆Al_(65)Cu_(20)Fe_(15)涂层的耐腐蚀性  

Corrosion Resistance of Laser Cladding Al_(65)Cu_(20)Fe_(15) Coating on AZ91D Mg Alloy

作　　者：丁亚茹[1,2] 张顺[1,2] 高思为 李国伟[2] 

机构地区：[1]内蒙古机电职业技术学院,内蒙古呼和浩特010070 [2]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051

出　　处：《热加工工艺》2016年第14期168-170,共3页Hot Working Technology

摘　　要：采用6k W横流CO_2激光器在镁合金AZ91D表面激光熔覆准晶Al_(65)Cu_(20)Fe_(15)以提高镁合金表面的性能。结果表明:镁合金表面生成了Al_(65)Cu_(20)Fe_(15)、Al_(12)Fe_(17)、Al_(58)Cu_(44)、AlFe和AlCu。熔覆后试样硬度从70 HV0.2左右提高到145HV0.2。激光熔覆涂层的耐腐蚀性下降。In order to improve the surface property of AZ91D Mg alloy, quasi-crystal Al65Cu20Fe15 was deposited on AZ91D alloy surface by using cross-flow CO2 laser with 6 kW. The results show that the surface of Mg alloy generates Al65Cu20Fe15, All2Fe17, Al58Cu44, AIFe and AlCu. The hardness of the samples after cladding changes from 70 HV0.2 to 145 HV0.2. The corrosion resistance of the laser cladding layer decreases.

关 键 词：激光熔覆 准晶 Al65Cu20Fe15 耐腐蚀 

分 类 号：TG174.44[金属学及工艺—金属表面处理]