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首页> 外文期刊>Materials Science and Engineering >Microstructure, texture and mechanical properties of Mg-Gd-Y-Zr alloy annular forging processed by hot ring rolling
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Microstructure, texture and mechanical properties of Mg-Gd-Y-Zr alloy annular forging processed by hot ring rolling

机译：热环轧制Mg-Gd-Y-Zr合金环形锻件的组织，织构和力学性能

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摘要

Hot ring rolling (HRR) was successfully applied to fabricate large-size seamless magnesium alloy annular forging in this work and the resultant microstructures, texture and mechanical properties of the ring are discussed. Results show that the microstructures, along the thickness direction of the ring, are heterogeneously distributed, with the extent of dynamic recrystallization (DRX) differing among different sampling regions, owing to the inhomogeneous strain and temperature distribution. Typical basal texture is identified in all sampling regions, but with different degree of inclination or scattering of the {0002} basal poles. Due to the rotation of the basal poles towards some specific direction, the ring exhibits an obvious mechanical anisotropy. After aging treatment, the best comprehensive mechanical properties are obtained in the transverse direction of the outer region, with an ultimate tensile stress of 456 MPa, yield stress of 426 MPa and elongation to failure of 3.596.
机译：在这项工作中，成功地将热环轧制（HRR）应用于制造大型无缝镁合金环形锻件，并讨论了所得的环组织，组织和力学性能。结果表明，由于不均匀的应变和温度分布，沿环厚度方向的微观结构是不均匀分布的，不同采样区域之间的动态重结晶程度不同。在所有采样区域中都可以识别出典型的基底纹理，但是{0002}基底极的倾斜度或散射度不同。由于基极朝某个特定方向旋转，因此环表现出明显的机械各向异性。经过时效处理后，在外部区域的横向上可获得最佳的综合机械性能，极限拉伸应力为456 MPa，屈服应力为426 MPa，断裂伸长率为3.596。

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  • 来源
    《Materials Science and Engineering》 |2017年第24期|40-47|共8页
  • 作者

    Shilun Yu; Chuming Liu; Yonghao Gao; Shunong Jiang; Yi Yao;

  • 作者单位

    School of Materials Science and Engineering, Central South University, Changsha 410083, China;

    School of Materials Science and Engineering, Central South University, Changsha 410083, China;

    School of Materials Science and Engineering, Central South University, Changsha 410083, China;

    School of Civil Engineering, Central South University, Changsha 410083, China;

    School of Materials Science and Engineering, Central South University, Changsha 410083, China;

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

    Magnesium alloy; Hot ring rolling; Microstructure; Texture; Mechanical anisotropy;

    机译：镁合金热环轧制;微观结构质地;机械各向异性;

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