The influence of cooling rate on the formation of an amorphous phase in Si-based multicomponent alloys and its thermal stability

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8 Citations (Scopus)

Abstract

By adding Ni, Cr, and Zr to the Si-Al-Fe system and using a higher surface velocity of the copper wheel of 63 m/s, the composition range of an amorphous single phase was extended to 60 at% Si. An amorphous Si 60 Al 18 Fe 12 Ni 4 Cr 3 Zr 3 alloy was produced. The amorphous phase in the Si-Al-TM (TM = transition metals) alloys shows higher thermal stability than in the Al-Si-TM alloys. By the shift of differential scanning calorimetry (DSC) peaks with change of heating rate, the activation energy for the transformation was determined to be 343 kJ/mol for Si 55 Al 20 Fe 10 Ni 5 Cr 5 Zr 5 alloy and 374 kJ/mol for Si 50 Al 25 Fe 10 Ni 5 Cr 5 Zr 5 alloy.

Original languageEnglish
Pages (from-to)1165-1172
Number of pages8
JournalMaterials Research Bulletin
Volume34
Issue number7
DOIs
Publication statusPublished - 1999 Jan 1

Keywords

  • A. amorphous materials
  • C. differential scanning calorimetry (DSC)
  • C. electron microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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