Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 26    No. 2    February 2016

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Compressive anisotropy of extruded Mg-Dy-Zn alloy sheet
Xiao-mei LUO1,2, Guang-li BI1,2, Jing JIANG1,2, Ming LI1,2, Rong-guang LI3, Yuan-dong LI1,2, Ying MA1,2, Yuan HAO1,2

1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,
Lanzhou University of Technology, Lanzhou 730050, China;
2. Key Laboratory of Nonferrous Metal alloys and Processing, Ministry of Education,
Lanzhou University of Technology, Lanzhou 730050, China;
3. School of Mechanical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China

Abstract:Compressive anisotropy of extruded Mg-2Dy-0.5Zn (mole fraction, %) alloy sheet was investigated. The alloy sheet was mainly composed of α-Mg, (Mg, Zn)xDy phase and a large number of long period stacking ordered (LPSO) phases distributed along the extrusion direction. The compressive experimental results show that the alloy sheet exhibits an obvious compressive anisotropy. The compressive strength of the specimen in the extrusion direction (ED) is higher than those of the specimens in the transverse direction (TD) and 45° inclined to the extrusion direction. The compressive yield strength (CYS), ultimate compressive strength (UCS) and compressive strain of the specimen in the ED are 274.65 MPa, 518.94 MPa and 12.93%, respectively. The compressive anisotropy is mainly attributed to the distribution of LPSO phase and formation of fiber texture in the deformed grains.

 

Key words: Mg-Dy-Zn alloy; microstructure; texture; LPSO phase; compressive anisotropy

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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