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Mechanical properties of AZ31 Mg alloy recycled by severe deformation

机译:严重变形回收的AZ31镁合金的力学性能

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摘要

AZ31 Mg machined chips were recycled by extrusion at 673 K with a low extrusion ratio of 45:1 and a high extrusion ratio of 1600:1. Oxide contaminants were dispersed more uniformly in the recycled specimen with the high extrusion ratio than in that with the low extrusion ratio. In tensile tests, the recycled specimens with the high extrusion ratio showed about 50 percent higher 0.2 percent yield stress and about 20 percent higher tensile strength compared with those of the reference specimens, which were the extruded AZ31 Mg blocks under the same conditions as the recycled specimens. The improvement of the tensile properties was attributed not only to the small grain size, but also to the dispersed oxide contaminants.
机译:AZ31 Mg机加工的切屑通过在673 K压力下以45:1的低挤压比和1600:1的高挤压比进行挤压回收。与高挤压比相比,高挤压比的氧化物样品在再生样品中的分布更均匀。在拉伸试验中,具有较高挤压比的再生样品与参考样品相比,挤压样品显示出0.2%的屈服应力和约20%的抗拉强度,与参考样品相比,后者是在与再生条件相同的条件下挤出的AZ31 Mg块标本。拉伸性能的改善不仅归因于小晶粒尺寸,还归因于分散的氧化物污染物。

著录项

  • 来源
    《Journal of Materials Research》 |2006年第3期|p.754-760|共7页
  • 作者单位

    Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology, Moriyama-ku, Nagoya 463-8560, Japan;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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