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The origin of nuclei and the refinement mechanism for solidified superalloy IN718 under pulsed magnetic field

机译:脉冲磁场作用下凝固超合金IN718的核起源及细化机理

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摘要

The grain refinement effect of a pulsed magnetic field on superalloy IN718 was investigated. The experimental results show that fine equiaxed grains are acquired under the pulsed magnetic field. The refinement effect of the pulsed magnetic field is affected by the mold temperature. And the mixed grains are found in the solidified microstructures under the pulsed magnetic field. The origin of nuclei under the pulsed magnetic field is from the mold wall because of the rough mold surface, the undercooling, and the melt vibration, which all contribute to the refinement of solidified grains.
机译:研究了脉冲磁场对高温合金IN718的晶粒细化效果。实验结果表明,在脉冲磁场下获得了细等轴晶。脉冲磁场的细化效果受模具温度影响。在脉冲磁场作用下,在凝固的微观组织中发现了混合晶粒。由于粗糙的模具表面,过冷和熔体振动,脉冲磁场作用下的原子核起源于模具壁,所有这些都有助于固化晶粒的细化。

著录项

  • 来源
    《Journal of Materials Research》 |2009年第12期|3689-3692|共4页
  • 作者单位

    Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China;

    Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China;

    Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People's Republic of 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);
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  • 正文语种 eng
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