Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (7): 950-954.DOI: 10.12068/j.issn.1005-3026.2017.07.009

• Materials & Metallurgy • Previous Articles     Next Articles

Effect of Zn on Microstructure and Mechanical Properties of 5083 Alloy

SHI Jian-chao, LUO Hong-jie, YAO Guang-chun   

  1. School of Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2016-01-29 Revised:2016-01-29 Online:2017-07-15 Published:2017-07-07
  • Contact: SHI Jian-chao
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Abstract: When 1.5%~5% Zn(mass fraction)element was added into 5083 alloy, the effect of Zn on microstructure and mechanical properties was investigated. The microstructures of as-cast, homogenized and rolled alloys were characterized by SEM and EDS and mechanical property of the rolled alloy was obtained in a tensile test. It was found that the segregation in as-cast alloy increased with the additive of Zn and the second phases were mainly the rich-Mg and rich-Zn phases. After homogenization treatment, the homogenized alloy could be rolled more easily, the volume fraction of the second phase decreased significantly and the unresolved second phases were Mg2Si and Al3Fe. The results also showed that the grain size of the rolled alloy decreased obviously to 150nm. With the more additive of Zn, the yield and tensile strength of the rolled alloy increased, while the elongation decreased slightly.

Key words: 5083 alloy, homogenizing treatment, rolling, microstructure, mechanical property

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