Large-size ultrahigh strength Ni-based bulk metallic glassy matrix composites with enhanced ductility fabricated by spark plasma sintering

Guoqiang Xie, Dmitri V. Louzguine-Luzgin, Hisamichi Kimura, Akihisa Inoue, Fumihiro Wakai

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Ni-based bulk glassy alloy composites (GACs) simultaneously with ultrahigh strength and enhanced ductility and satisfying large-size requirements were fabricated by spark plasma sintering of gas-atomized Ni52.5 Nb10 Zr15 Ti15 Pt7.5 glassy alloy powder blend with ceramic or metal powders. No crystallization of metallic glassy matrix and good bonding state between the particles are responsible for good mechanical properties of the fabricated bulk GACs. The improvement of plastic ductility of the fabricated bulk GACs originates from the structural inhomogeneity caused by the particles inclusion. The additional particulates act as a resisting media causing deviation, branching, and multiplication of shear bands.

Original languageEnglish
Article number121907
JournalApplied Physics Letters
Volume92
Issue number12
DOIs
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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