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Effect of Forging on Microstructure, Texture and Compression Behavior of Extruded AZ31B

机译:锻造对挤压AZ31B组织,织构和压缩行为的影响

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摘要

Forging is a common method employed in the fabrication of automotive components. In this study, extruded AZ31B magnesium alloy was semi-close die forged at a temperature of 500 ℃ with a ram rate of 40 mm/s. Microstructural study indicated a bimodal grain structure with weaker texture in the forged material compared to the as-extruded material. Uniaxial compression tests indicated a remarkable improvement of fracture strain from 36 to 61% with a reduction of ultimate compressive strength between 4 and 22% in the forged samples compared to the as-extruded samples. It is attributed to the modification of microstructure and texture decreases twinning and increases the slipping activity resulting the improvement of ductility and reduced strength at room temperature.
机译:锻造是汽车零部件制造中常用的方法。在这项研究中,挤压的AZ31B镁合金在500℃的温度下以40 mm / s的夯速进行半封闭模锻。显微组织研究表明,与挤压后的材料相比,锻造材料的双峰晶粒结构质地较弱。单轴压缩试验表明,与挤压后的样品相比,锻造样品的断裂应变从36%显着提高到61%,极限抗压强度降低了4%至22%。这归因于微观结构的改变,并且织构减少了孪晶并增加了滑动活性,从而导致了室温下延展性的改善和强度的降低。

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  • 来源
  • 会议地点 San Diego(US)
  • 作者单位

    Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada;

    Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada;

    Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada;

    Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada;

    Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada;

    CanmetMATERIALS, Natural Resources Canada,183 Longwood Road South, Hamilton, ON L8P 0A1, Canada;

    CanmetMATERIALS, Natural Resources Canada,183 Longwood Road South, Hamilton, ON L8P 0A1, Canada;

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

    Forging; Extrusion; Microstructure; Texture; Compression;

    机译:锻造;挤压;微观结构质地;压缩;

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