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The critical cooling rate of the Fe61Co5Zr8Y2Cr2Mo7B15 bulk amorphous alloy was determined to be 37 K/s, providing an indication that this alloy has a high glass-forming ability. The non-isothermal crystallization kinetics of the Fe61Co5Zr8Y2Cr2Mo7B15 amorphous alloy prepared by using the copper-mold casting or melt-spinning were also investigated. It is found that the activation energies in the non-isothermal crystallization process show a strong dependence on the cooling rates for glass formation, revealing that the melt-spun amorphous alloy has a higher thermal stability.

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Critical Cooling Rate and Thermal Stability of Fe–Co–Zr–Y–Cr–Mo–B Amorphous Alloy

  • 章节

  • 发表日期：

    2025年

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  • Q. J. Chen,
  • H. B. Fan,
  • J. Shen,
  • J. F. Sun,
  • Z. P. Lu

摘要

The critical cooling rate of the Fe61Co5Zr8Y2Cr2Mo7B15 bulk amorphous alloy was determined to be 37 K/s, providing an indication that this alloy has a high glass-forming ability. The non-isothermal crystallization kinetics of the Fe61Co5Zr8Y2Cr2Mo7B15 amorphous alloy prepared by using the copper-mold casting or melt-spinning were also investigated. It is found that the activation energies in the non-isothermal crystallization process show a strong dependence on the cooling rates for glass formation, revealing that the melt-spun amorphous alloy has a higher thermal stability.