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Effects of Minor Sr on As-Cast Microstructure and Mechanical Properties of ZA84 Magnesium Alloy

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Abstract

The effects of minor Sr additions on the as-cast microstructure and mechanical properties of the ZA84 magnesium alloy were investigated. The results indicate that adding 0.05-0.15 wt.% Sr to the ZA84 alloy does not cause an obvious change in the morphology and distribution of the Mg32(Al,Zn)49 phase. However, the grains of the Sr-containing ZA84 alloys are effectively refined. Among the Sr-containing ZA84 alloys, the grains of the alloy added 0.10 wt.% Sr are relatively finer than other alloys. Furthermore, adding 0.05-0.15 wt.% Sr to the ZA84 alloy improves the tensile properties at room temperature and 150 °C but decreases the creep properties. Among the Sr-containing ZA84 alloys, the alloy added 0.10 wt.% Sr obtains the optimum tensile properties at room temperature and 150 °C.

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Acknowledgments

The present work was supported by the National Natural Science Foundation of China (No. 50725413), the National Basic Research Development Program of China (973 Program) (No. 2007CB613704), and the Chongqing Education Commission of China (KJ090628).

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Authors and Affiliations

  1. Materials Science & Engineering College, Chongqing University of Technology, Chongqing, 400050, China

    Mingbo Yang & Liang Cheng

  2. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400045, China

    Mingbo Yang & Fusheng Pan

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  1. Mingbo Yang
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Correspondence to Mingbo Yang.

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Yang, M., Pan, F. & Cheng, L. Effects of Minor Sr on As-Cast Microstructure and Mechanical Properties of ZA84 Magnesium Alloy. J. of Materi Eng and Perform 19, 1043–1050 (2010). https://doi.org/10.1007/s11665-009-9577-5

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  • DOI: https://doi.org/10.1007/s11665-009-9577-5

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