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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.49  No.6 (2008)  >  pp.1486-1489

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Improvement of Glass Forming Ability of Cu-Ni-Zr-Ti Alloys by Substitution of Hf and Nb

Dong-Myoung Lee1)2), Ju-Hyun Sun2), Seung-Yong Shin2), Jeong-Chan Bae2) and Chi-Hwan Lee1)
1) Department of Metallurgical Engineering, Inha University
2) Advanced Functional Material Team, Korea Institute of Industrial Technology

New bulk metallic glasses exhibiting a high glass forming ability were formed by a substitution of Hf and Nb for Zr and Ti in quaternary Cu-Ni-Zr-Ti system. An 8 mm-diameter BMG rod was obtained at the Cu50Ni8Zr15Hf3Ti23Nb1 composition by suction casting method. The glass transition temperature, crystallization temperature and reduced glass transition temperature of the BMG were 699 K, 754 K, and 0.59, respectively. Making an alloy system more complex was useful to increase the GFA.

metallic glass, glass forming ability, solidification, intermetallic alloys

Received: February 25, 2008
Accepted: April 02, 2008 , Published online: May 25, 2008
Copyright (c) 2008 The Japan Institute of Metals



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