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

doi:10.1016/j.matlet.2019.127059

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

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article

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 language	English
Article number	127059
Journal	Materials Letters
Volume	262
DOIs	https://doi.org/10.1016/j.matlet.2019.127059
Publication status	Published - 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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Wan, J., Xie, M. S., Zhang, W. W., Yang, C., Xie, G., & Louzguine-Luzgin, D. V. (2020). Achieving super-high strength in an aluminum based composite by reinforcing metallic glassy flakes. Materials Letters, 262, [127059]. https://doi.org/10.1016/j.matlet.2019.127059

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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.",

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AU - Zhang, W. W.

AU - Yang, C.

AU - Xie, Guoqiang

AU - Louzguine-Luzgin, D. V.

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