Anomalous temperature dependence of crystalline-to-amorphous transformation induced by high-pressure torsion in Zr50(Cu,Al)50

Fanqiang Meng, Koichi Tsuchiya, Qingsong Mei, Baozhen Jiang, Yoshihiko Yokoyama

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Martensite phases of Zr50Cu50 and Zr 50Cu44Al6 were deformed by high-pressure torsion (HPT) at different temperatures ranging from 253 to 473 K. Microstructural observations revealed that the crystalline-to-amorphous transformation induced by HPT showed remarkable temperature dependence: an increase in deformation temperature up to 473K significantly increased the fraction of the amorphous structure. This result suggests that the lattice instability near martensitic transformation temperature promotes crystalline-to-amorphous transformation, which is coherent to the generalized Lindemann criterion of defect-induced amorphization.

Original languageEnglish
Pages (from-to)1224-1227
Number of pages4
JournalMaterials Transactions
Volume54
Issue number7
DOIs
Publication statusPublished - 2013 Jul 26

Keywords

  • Amorphization
  • High pressure torsion
  • Lattice instability
  • Zirconium-copper-aluminum

ASJC Scopus subject areas

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

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