金属热处理 ›› 2020, Vol. 45 ›› Issue (12): 227-230.DOI: 10.13251/j.issn.0254-6051.2020.12.044

• 材料研究 • 上一篇    下一篇

Mg-12Zn-xCa合金T6处理后的组织与硬度

王博   

  1. 渤海船舶职业学院 材料工程系, 辽宁 葫芦岛 125000
  • 收稿日期:2020-06-21 出版日期:2020-12-25 发布日期:2021-01-14
  • 作者简介:王 博(1981—),男,副教授,硕士,主要研究方向为材料成形及组织性能,E-mail:wangbo411@163.com

Microstructure and hardness of Mg-12Zn-xCa alloy after T6 treatment

Wang Bo   

  1. Department of Materials Engineering, Bohai Shipbuilding Vocational College, Huludao Liaoning 125000, China
  • Received:2020-06-21 Online:2020-12-25 Published:2021-01-14

摘要: 研究了铸态Mg-12Zn-xCa(x=0、1、2、3)合金T6处理后的组织与硬度。结果表明,铸态Mg-12Zn-xCa合金经T6处理后,组织中α-Mg相由枝晶变为等轴晶且细化,硬度提高。随着Ca含量增加,T6处理Mg-12Zn-xCa合金组织细化,硬度提高,但Ca含量超2%时,组织出现枝晶化,硬度降低。

关键词: Mg-12Zn-xCa合金, T6处理, 组织, 硬度

Abstract: Microstructure and hardness of the as-cast Mg-12Zn-xCa (x=0, 1, 2, 3) alloys after T6 treatment were studied. The results show that after T6 treatment, the α-Mg phase in the alloys changes from dendritic crystals to equiaxed grains and is refined, the hardness of the alloy is increased obviously. With the increase of Ca content, the microstructure of T6 treated Mg-12Zn-xCa alloys is refined and the hardness is increased, but when the content of Ca is more than 2%, dendritic crystals appear in the structure and the hardness decreases.

Key words: Mg-12Zn-xCa alloys, T6 treatment, microstructure, hardness

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