Formation of bulk metallic glass in situ composites in Cu50Zr45Ti5 alloy

Q. S. Zhang, W. Zhang, G. Q. Xie, K. S. Nakayama, H. Kimura, A. Inoue

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The structure and mechanical property of the Cu50Zr45Ti5 bulk metallic glass in situ composites prepared by copper mold casting are investigated. It was found that nanocrystals with the sizes ranging from 2 to 10 nm distributed homogeneously in the glassy matrix for the Cu50Zr45Ti5 rod with a diameter of 1.5 mm. The 2.5 mm Cu50Zr45Ti5 rod is a kind of gradient composite, consisting of crystalline phase in the central part and glassy phase in the outer part. The yield strength and elastic-plastic strain for the 1.5 mm Cu50Zr45Ti5 rod are 1680 MPa and 10.6%, respectively. For the 2.5 mm Cu50Zr45Ti5 rod, the yield strength and elastic-plastic strain are 1020 MPa and 18% coupled with evident work hardening behavior. The ZrCu phase precipitated from the Cu50Zr45Ti5 rod shows evident plastic deformation, which contributes to the high ductility of the Cu50Zr45Ti5 bulk metallic glass in situ composites.

本文言語English
ページ(範囲)236-240
ページ数5
ジャーナルJournal of Alloys and Compounds
431
1-2
DOI
出版ステータスPublished - 2007 4月 4
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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