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Effect of Y‐Element on Microstructure and Mechanical Properties of As‐Cast Mg–3Zn–1Mn Alloy Containing I and W Phase
Author(s) -
Wu Xiaofeng,
Xu Chunxiang,
Zhang Zhengwei,
Yang Wenfu,
Zhang Jingshan,
Zhang Wenxin
Publication year - 2020
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201900964
Subject(s) - materials science , alloy , ductility (earth science) , microstructure , metallurgy , ultimate tensile strength , phase (matter) , ternary operation , elongation , rare earth element , magnesium alloy , rare earth , creep , chemistry , organic chemistry , computer science , programming language
Magnesium (Mg) alloy has a wide range of applications in the biomedical field at present. The Mg–Zn–Mn ternary alloy has excellent corrosion resistance, but the addition of Mn element reduces the ductility of the alloy. In this study, a little rare earth element Y is added to the Mg–Zn–Mn ternary alloy to improve the mechanical properties of the alloy, especially the ductility. Experimental results show that the second phase composition and mechanical properties of the alloys are improved by introducing the new second phase (quasicrystal I phase Mg 3 Zn 6 Y and W phase Mg 3 Zn 3 Y 2 ). When the content of rare earth element Y is 1 wt%, the mechanical properties of the as‐cast alloy are optimized that the tensile strength is increased by 60 MPa compared with the Mg–Zn–Mn alloy, reaching 198 MPa. The elongation increased from 9% to 21%; therefore, the ductility of the material is greatly improved.