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. 28    No. 5    May 2018

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Effects of secondary phases on texture and mechanical properties of as-extruded Mg-Zn-Er alloys
Ke LIU1, Jin-xue LIU1, Shu-bo LI1, Zhao-hui WANG1, Wen-bo DU1, Qing-feng WANG2

1. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China; 2. Huadian Electric Power Research Institute, Beijing 100124, China

Abstract:The effects of kinds of secondary phases on texture and mechanical properties of Mg-Zn-Er alloys were investigated. The results suggest that the I-phase has a great effect on modification of the texture via the discontinuous dynamic recrystallization mechanism (DDRX), which tends to form well-developed equiaxed recrystallized grains. Meanwhile, the W-phase plays an important role in refining the grain size via continuous dynamic recrystallization (CDRX), companied with a higher maximum texture intensity. Thus, the Mg-6Zn-1Er alloy containing I-phase shows a performance of higher elongation of 20.4%. The Mg-2Zn-2Er alloy including W-phase displays a better tensile strength, and the yield strength (YS) is about 247 MPa.

 

Key words: Mg-Zn-Er alloy; dynamic recrystallization; texture; tensile properties

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

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

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