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Solute Distribution within Rapidly Grown Fe-Co Single Phase

机译:快速生长的Fe-Co单相中的溶质分布

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摘要

Rapid growth of Fe-Co single phase is accomplished by rapid solidification in a drop tube. (Fe, Co) grains are refined with the decrease of alloy droplet diameters. Energy dispersive spectroscopy analysis indicates that microsegregation in (Fe, Co) single phase becomes lower with the reduction of droplet diameters. The experimental results with theoretical calculation reveal that the microsegregation is efficiently suppressed with the increase of undercooling. The free energies of intrinsic segregation for Fe-30 wt.%Co, Fe-40 wt.%Co and Fe-50 wt.%Co alloys are -47.17, -27.57 and -6.57 kJ/mol, respectively. The dependence of free energy of segregation on composition and undercooling has been deduced.
机译:Fe-Co单相的快速生长是通过在滴管中快速固化来实现的。 (Fe,Co)晶粒随着合金液滴直径的减小而细化。能量色散光谱分析表明,(Fe,Co)单相中的微偏析随着液滴直径的减小而降低。理论计算的实验结果表明,随着过冷度的增加,微偏析得到了有效抑制。 Fe-30 wt。%Co,Fe-40 wt。%Co和Fe-50 wt。%Co合金的本征偏析自由能分别为-47.17,-27.57和-6.57 kJ / mol。推导了分离的自由能对组成和过冷的依赖性。

著录项

  • 来源
    《中国物理快报:英文版》 |2007年第2期|508-511|共4页
  • 作者单位

    Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072;

    Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072;

    Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072;

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理学;
  • 关键词

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