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

  • Q. J. Chen*
  • , H. B. Fan
  • , J. Shen
  • , J. F. Sun
  • , Z. P. Lu
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Oak Ridge National Laboratory

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The critical cooling rate of the Fe[[inf]]61[[/inf]]Co[[inf]]5[[/inf]]Zr[[inf]]8[[/inf]]Y[[inf]]2[[/inf]]Cr[[inf]]2[[/inf]]Mo[[inf]]7[[/inf]]B[[inf]]15[[/inf]] 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 Fe[[inf]]61[[/inf]]Co[[inf]]5[[/inf]]Zr[[inf]]8[[/inf]]Y[[inf]]2[[/inf]]Cr[[inf]]2[[/inf]]Mo[[inf]]7[[/inf]]B[[inf]]15[[/inf]] 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.

Original languageEnglish
Title of host publicationFe-Based Amorphous Alloys with High Glass Forming Ability
PublisherSpringer Science+Business Media
Pages59-65
Number of pages7
ISBN (Electronic)9789819639328
ISBN (Print)9789819639311
DOIs
StatePublished - 1 Jan 2025
Externally publishedYes

Keywords

  • Activation energy
  • Bulk metallic glasses
  • Critical cooling rates
  • Glass-forming ability
  • Thermal stability

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