The mechanical properties and microstructures of AZ91D magnesium alloy processed by selective laser cladding with Al powder

被引：29
作者：
Lin, Pengyu [1 ,2 ]
Zhang, Zhihui [1 ,2 ]
Ren, Luquan [1 ,2 ]
机构：
[1] Minist Educ, Key Lab Engn Bion, Beijing, Peoples R China
[2] Jilin Univ, Coll Biol & Agr Engn, Changchun 130025, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2014年 / 60卷
关键词：
Mechanical property; Magnesium alloys; Microstructure; WORK TOOL STEELS; CORROSION-RESISTANCE; OXIDATION RESISTANCE; SURFACE-TREATMENT; WEAR-RESISTANCE; CARBON STEEL; ALUMINUM;
D O I：
10.1016/j.optlastec.2013.12.024
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This work focuses on the effects of selective laser cladding using Al powder on the properties and microstructure of Mg alloy AZ91D, with different experimental parameters. The scanning strategy was inspired by the alternately hard-soft shell surface structures. The microstructure was greatly refined. Furthermore, the growth of the beta-Mg17Al12 dendrite was curbed. The treatment depth is similar to 900 mu m. The UTS, YS and microhardness were notably increased. However, the ductility was decreased by a part. The output power of 2200 W and the scanning speed of 180 mm/min are the optimum combination. The resulting wear resistance was thus the highest of all. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：61 / 68
页数：8
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