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Effects of Sn on the Microstructure and Mechanical properties of as-cast AZ80 alloys
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Affiliation:

1.Materials Institute, Shandong Academy of Sciences;2.Institute of Metal, Chinese Academy of Sciences

Clc Number:

TG292

Fund Project:

National Key Research and Development Plan(2017YFB0103904);Natural Science Foundation of Shandong province(ZR2017PEE007)

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    Abstract:

    The effects of Sn addition on the microstructure and tensile properties of as-cast AZ80 alloy were investigated by the means of OM, XRD, SEM and tensile property test. The microstructure of as-cast AZ80-xSn (x=1, 3, 5, wt.% ) alloys appears typical equiaxed dendrites morphology, which consists of a-Mg primary, divorced eutectic (Mg+Mg17Al12), laminar Mg17Al12, divorced eutectic Mg2Sn. The addition of Sn elecment effectively suppressed the laminar Mg17Al12 phase precipitating duringSsolidification. When the Sn content was 5 wt.%, the laminar Mg17Al12 phase nearly disappeared. The grain size reduced when the Sn content less than 3 wt.%. Moreover, The alloy was strengthened significantly by Sn content and the AZ80-3Sn alloy had the superior mechanical property.

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[Zhou Jixue, Ma Baichang, Wang Jinwei, Liu Yunteng, Zhao Dongqing, Tang Shouqiu, Yang Yuansheng. Effects of Sn on the Microstructure and Mechanical properties of as-cast AZ80 alloys[J]. Rare Metal Materials and Engineering,2019,48(3):765~769.]
DOI:10.12442/j. issn.1002-185X.20170851

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History
  • Received:September 20,2017
  • Revised:December 14,2017
  • Adopted:December 18,2017
  • Online: April 10,2019
  • Published: