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题名: Improving mechanical properties of age-hardenable Mg-6Zn-4Al-1Sn alloy processed by double-aging treatment
作者: Zhu, Shaozhen;  Luo, Tianjiao;  Yang, Yuansheng
发表日期: 2017-11-1
摘要: Microstructure and mechanical properties of a new high-strength Mg-6Zn-4Al-1Sn alloy were investigated. Microstructure of the as-cast Mg alloy exhibited partially divorced characteristics. The dendritic structure of the Mg-6Zn-4Al alloy was significantly refined with the addition of 1% ( in weight) Sn, but Mg2Sn phases were not formed. In addition, an icosahedral quasi-crystal phase was formed in the as-cast Mg-6Zn-4Al-1Sn alloy. It was found that after the double-aging treatment through two different heat treatments on the Mg-6Zn-4Al-1Sn alloy, the precipitates were finer and far more densely dispersed in the matrix compared with single-aged counterpart, resulting in a significant improvement in tensile strength with yield strength, ultimate tensile strength and elongation of 175 MPa, 335 MPa and 11%, respectively. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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Recommended Citation:
Zhu, Shaozhen,Luo, Tianjiao,Yang, Yuansheng. Improving Mechanical Properties Of Age-hardenable Mg-6zn-4al-1sn Alloy Processed By Double-aging Treatment[J]. Journal Mater Sci Technol,2017,33(11):1249-1254.

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