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Effects of Extrusion-Shear Process Conditions on the Microstructures and Mechanical Properties of AZ31 Magnesium Alloy

机译：挤压剪切工艺条件对AZ31镁合金组织和力学性能的影响

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摘要

In this paper, the effects of extrusion-shear (ES) on the microstructures and mechanical properties of AZ31 magnesium alloy has been studied, which has been achieved by conducting a lot of experiments and tests, including ES process, direct extrusion with different billet temperatures, microstructure analysis, hardness test, tensile & compression tests. The results show that the ES-processed rods has higher strengths (yield strength and tensile strength) than the direct extrusion ones with the same billet temperature, which contributed to their lower averaged grain size obtained from microstructure analysis according to Hall-Petch relation. Besides, the hardness of ES-processed AZ31 magnesium alloy decreases with the increasing of billet temperature. By comparing the two processes, it can be seen that the ES process could refine the microstructure and improve the mechanical properties of magnesium alloy.
机译：本文研究了挤压剪切（ES）对AZ31镁合金的组织和力学性能的影响，这是通过进行许多实验和测试（包括ES工艺，在不同坯料温度下直接挤压）实现的，微观结构分析，硬度测试，拉伸和压缩测试。结果表明，在相同的坯料温度下，经ES处理的棒材比直接挤压的棒材具有更高的强度（屈服强度和拉伸强度），这有助于通过Hall-Petch关系从显微组织分析获得更低的平均晶粒度。此外，ES加工的AZ31镁合金的硬度随坯料温度的升高而降低。通过比较这两种工艺，可以看出ES工艺可以改善镁合金的显微组织并改善其机械性能。

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  • 来源
    《High temperature materials and processes》 |2016年第10期|967-972|共6页
  • 作者

    H.J. Hu; Y.Y. Li; X. Wang; D.F. Zhang; M.B. Yang;

  • 作者单位

    College of Material Science and Engineering, Chongqing University of Technology, Chongqing 400050, China;

    College of Material Science and Engineering, Chongqing University of Technology, Chongqing 400050, China;

    Mechanical Engineering Department, The University of Alabama, Tuscaloosa, AL 35487, USA;

    College of Material Science and Engineering, Chongqing University, Chongqing 400045, China;

    College of Material Science and Engineering, Chongqing University of Technology, Chongqing 400050, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    magnesium alloy; extrusion-shear; billet temperature; microstructure; mechanical properties;

    机译：镁合金挤压剪切坯料温度微观结构机械性能;

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