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首页> 外文期刊>Materials Science and Engineering >Microstructure and mechanical properties of as-extruded and as-aged Mg-Zn-Al-Sn alloys
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Microstructure and mechanical properties of as-extruded and as-aged Mg-Zn-Al-Sn alloys

机译：挤压和时效的Mg-Zn-Al-Sn合金的显微组织和力学性能

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摘要

The microstructure and mechanical properties of as-extruded and as-aged Mg-4Zn-1.5Al (in wt%) alloy rods were investigated systematically. The results indicate that the addition of Sn to as-extruded Mg-4Zn-1.5Al alloys can lead to the formation of Mg_2Sn and refine the grain size as the Sn content is less than 2%. However, higher Sn results in the coarsening of grain and secondary precipitates. Among the as-extruded alloys, Mg-4Zn-1.5Al-2Sn alloy exhibits optimal combination of strength and ductility, the ultimate tensile strength (UTS), yield strength (YS) and elongation (ε_f) are 305 MPa, 195 MPa and 15%, respectively. A subsequent T5 heat treatment was carried out on as-extruded Mg-4Zn-1.5Al-2Sn. After aging at 150 ℃ for 5-50 h, there are much more secondary precipitates, which results in improved strength and ductility. The best combination of strength and ductility is as-extruded ZAT422 alloy aging at 150 ℃ for 40 h, the UTS, YS and ε_f are 314 MPa, 236 MPa and 18%, respectively.
机译：系统地研究了挤压态和时效态的Mg-4Zn-1.5Al（wt％）合金棒的组织和力学性能。结果表明，在挤压态的Mg-4Zn-1.5Al合金中添加Sn可以导致Mg_2Sn的形成，并在Sn含量小于2％时细化晶粒尺寸。但是，较高的Sn会导致晶粒粗化和二次沉淀。在挤压合金中，Mg-4Zn-1.5Al-2Sn合金表现出强度和延展性的最佳组合，极限抗拉强度（UTS），屈服强度（YS）和延伸率（ε_f）分别为305 MPa，195 MPa和15 ％， 分别。随后对挤出的Mg-4Zn-1.5Al-2Sn进行T5热处理。在150℃老化5-50小时后，会有更多的二次沉淀物出现，从而提高了强度和延展性。强度和延展性的最佳组合是挤压成型的ZAT422合金在150℃时效40 h，UTS，YS和ε_f分别为314 MPa，236 MPa和18％。

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  • 来源
    《Materials Science and Engineering》 |2016年第22期|165-173|共9页
  • 作者

    Bo Wang; Fusheng Pan; Xianhua Chen; Wei Guo; Jianjun Mao;

  • 作者单位

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR China;

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR China,National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, PR China,Chongqing Academy of Science and Technology, Chongqing 401123, PR China;

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR China,National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, PR China;

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR China;

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Mg-4Zn-1.5Al; Sn; T5 treatment; Microstructure; Mechanical properties;

    机译：Mg-4Zn-1.5Al;锡;T5治疗;微观结构机械性能;

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