The compositional range of amorphous phase formation and thermal stability of Al90-xFe5Ni5Cex

Hongmei Chen, Xiaoyin Cheng, Jie Zhang, Yifang Ouyang, Yong Du, Xiaping Zhong, Xiaoming Tao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

The effects of Ce-substitution for Al in the Al90-xFe5Ni5Cex(x = 0, 2, 5, 7, 8, 9, and 10) system on the mechanical alloying process were investigated. The structural evolution in these powders was characterized by scanning electron microscopy, differential thermal analysis and X-ray diffraction techniques. The compositional range of amorphous forming was obtained and it extended from 5 to 9 at.% Ce. With increasing Ce content, the crystallization temperature of amorphous alloys increases. The crystallization temperature versus concentration of Ce was reproduced well by applying an extension of a relationship between the crystallization temperature and the vacancy formation energy of constituents with smaller atomic radius. The crystallization product phases were analyzed by XRD after annealing the milled powders at temperature over the crystallization temperature.
Original languageEnglish
Pages (from-to)309-313
Number of pages5
JournalJournal of Alloys and Compounds
Volume460
Issue number1-2
DOIs
Publication statusPublished - 28 Jul 2008

Keywords

  • Al-Fe-Ni-Ce alloy
  • Amorphous alloy
  • Mechanical alloying
  • Thermal stability

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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