Achieving super-high strength in an aluminum based composite by reinforcing metallic glassy flakes

Ji Wan, M. S. Xie, W. W. Zhang, C. Yang, Guoqiang Xie, D. V. Louzguine-Luzgin

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Ti-based metallic glass (Ti-MG) short flakes were combined with Al7075 powder in order to form a Ti-MG-reinforced Al-based metal matrix composite (AMC) sintered by spark plasma sintering. The results show that the metallic glassy reinforcements maintained their amorphous structure and were uniformly distributed in the matrix. This microstructure results in a super-high strength of the composite with a compressive strength of more than 1 GPa. The high strength of the composite is mainly derived from the direct bearing of the metallic glass and the dislocation strengthening by the glassy reinforcement and the second precipitate phases. The present study shows that good bonding is one of the major advantage of metallic glass reinforced AMCs.

Original languageEnglish
Article number127059
JournalMaterials Letters
Volume262
DOIs
Publication statusPublished - 2020 Mar 1

Keywords

  • Aluminum matrix composites
  • Interface
  • Metallic glasses
  • Sintering
  • Strength

ASJC Scopus subject areas

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

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