激光合金化对AZ91D镁合金力学性能的影响  

Effects of Laser Alloying on Mechanical Properties of AZ91D Magnesium Alloy

作　　者：刘帅[1] 殷锦捷[1] 张娈[1] 刘忆[2] 

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000 [2]徐州工程学院机电工程学院,江苏徐州221008

出　　处：《热加工工艺》2009年第2期35-37,共3页Hot Working Technology

摘　　要：在AZ91D镁合金表面预置Al粉,采用5kW横流CO2激光器对其进行合金化处理。采用电子探针对合金化层的元素分布进行分析,使用X射线衍射仪和扫描电子显微镜(SEM)对合金化层进行微观分析,测试涂层的摩擦磨损性能。结果表明:合金化层主要由α-Mg和β-Mg17Al12组成;合金化层的磨损性能与基体相比有了较大提高。Laser alloying Al powder on AZ91D magnesium alloy surface was achieved using 5 kW transverse flow CO2 lasers. The element distribution of alloying layer was analysed by electron probe. The microstructure of the alloying layers was characterized by X-ray diffraction and SEM. The wear resistance of alloying layers was measured. The results show that the alloying layers consist of α-Mg and β-Mg17Al12, the wear resistance of the laser modified samples considerably improves compared with the matrix.

关 键 词：AZ91D镁合金 激光合金化 组织 力学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程]