Effects of annealing temperature on microstructure and mechanical properties of LZ91 alloy

被引：10
作者：
Yang, Yan [1 ,2 ,3 ]
Li, Minmin [1 ,3 ]
Deng, Hongju [1 ,3 ]
Ren, Fengjuan [1 ,3 ]
Zhang, Hanzhu [1 ,3 ]
Jiang, Bin [1 ,2 ,3 ]
Peng, Xiaodong [1 ,3 ]
Pan, Fusheng [1 ,3 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Int Joint Lab Light Alloys MOE, Chongqing, Peoples R China
[2] Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing, Peoples R China
[3] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2020年 / 36卷 / 18期
关键词：
LZ91; alloy; cold-rolled; annealing; microstructure; mechanical properties;
D O I：
10.1080/02670836.2020.1853361
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effects of annealing temperature on the microstructure and mechanical properties of cold-rolled LZ91 alloy are investigated. The results indicate that LZ91 alloy is composed of alpha-Mg, beta-Li, MgLiZn and MgLi2Zn phases. The recrystallization of the cold-rolled alloy is completed when annealing at 125 degrees C and a large number of fine equiaxed grains with an average grain size of 3 mu m is formed. The cold-rolled LZ91 alloys annealed at 125 degrees C have the optimized comprehensive mechanical properties with the elongation, ultimate tensile strength and microhardness of 56.1%, 157 MPa and 51.2 HV, respectively. With the further increase in annealing temperature, the grain size begins to coarsen, which leads to the decrease in strength and ductility of the alloy.
引用
收藏
页码：2010 / 2017
页数：8
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