华南理工大学学报(自然科学版) ›› 2004, Vol. 32 ›› Issue (9): 50-53.

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等通道转角挤压后AZ31 镁合金的微观结构与性能

刘英 陈维平 张卫文 朱权利 赵海东   

  1. 华南理工大学 金属新材料制备与成形广东省重点实验室‚广东 广州510640
  • 收稿日期:2004-03-19 出版日期:2004-09-20 发布日期:2015-09-09
  • 通信作者: 刘英(1966-)‚男‚博士后‚主要从事有色合金制备与成形技术方面的研究. E-mail:liuying2000ly@tom.com
  • 作者简介:刘英(1966-)‚男‚博士后‚主要从事有色合金制备与成形技术方面的研究.
  • 基金资助:
    广东省自然科学基金资助项目 (0 4 30 0 12 4 )

Microstructure and Properties of AZ31 Magnesium Alloy with ECAP

Liu Ying Chen Wei- ping Zhang Wei- wen Zhu Quan- li Zhao Hai- dong   

  1. Key Laboratory for Advanced Metallic Materials Processing and Forming of Guangdong‚South China Univ.of Tech.‚Guangzhou510640‚Guangdong‚China
  • Received:2004-03-19 Online:2004-09-20 Published:2015-09-09
  • Contact: 刘英(1966-)‚男‚博士后‚主要从事有色合金制备与成形技术方面的研究. E-mail:liuying2000ly@tom.com
  • About author:刘英(1966-)‚男‚博士后‚主要从事有色合金制备与成形技术方面的研究.

摘要: 为了进一步探讨细晶镁合金的制备方法与性能 ,采用模角φ =12 0°的模具、以BC路径对AZ31镁合金进行了等通道转角挤压试验研究 ,对挤压过程中各道次试样的微观结构及性能进行了分析测试 .结果表明 ,随着挤压道次的增加 ,晶粒得到不断细化 ,力学性能也发生显著的变化 ;当挤压 12道次时 ,总的等效应变量约为 8,晶粒得到显著细化 ,晶粒尺寸为 1~ 5μm ,但合金的抗拉强度变化不大 ,屈服强度则有所下降 ,约为 10 0MPa ,延伸率则提高到 4 5 %以上。

关键词: 等通道转角挤压, 镁合金, 微观结构, 性能

Abstract:  In order to further investigate the preparation and property of ultra-grained magnesium alloy‚AZ31magnesium alloy was prepared by means of equa- l channel angular pressing (ECAP) and B c route in the die with the intersecting angle φ=120°.The microstructure and property of the processed material with different passes were then analyzed and tested.The results indicate that‚with the increase in the pressing pass‚the grains become finer and finer and the tensile behavior changes remarkably‚that with 12 pressing passes‚the total deformation strain of the alloy is about 8 and the grains are effectively refined to a mean size of 1~5μm‚and that the tensile strength of the alloy changes little‚while the yield strength decreases to about100MPa‚and the ductility increases to more than45%.

Key words:  equal channel angular pressing, magnesium alloy, microstructure, property

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