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Quaternary and Quinary Ni-based Amorphous Alloys in the Ni-Zr-Ti-X (X=Al, Si, P) and Ni-Zr-Ti-Si-Y (Y=Sn, Mo, Y) Systems

Published online by Cambridge University Press:  17 March 2011

M.H. Lee ,
S. Yi ,
T.G. Park ,
W.T. Kim  and
D.H. Kim
M.H. Lee
Affiliation:
Center for Noncrystalline Materials, Dept. of Metallurgical Eng., Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 12-749, Korea
S. Yi
Affiliation:
Reliability Assessment Center for Metallic Materials, Korea Institute of Industrial Science and Technology, Chonan, Korea
T.G. Park
Affiliation:
Center for Noncrystalline Materials, Dept. of Metallurgical Eng., Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 12-749, Korea
W.T. Kim
Affiliation:
Center for Noncrystalline Materials, Dept. of Metallurgical Eng., Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 12-749, Korea
D.H. Kim
Affiliation:
Center for Noncrystalline Materials, Dept. of Metallurgical Eng., Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 12-749, Korea
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Abstract

New Ni-based bulk amorphous alloys in the alloy system Ni-Zr-Ti-X (X=Al, Si, P) and Ni-Zr- Ti-Si-Y (Y=Sn, Mo, Y) were developed through systematic alloy design based upon the empirical rules for high glass forming ability (GFA). Additions of a small amount of Si and/or Sn to a ternary Ni-Ti-Zr alloy are very effective to increase GFA as well as the undercooled liquid region (ΔTX). Changes in crystallization mode during continuous heating of amorphous phase and lowered liquidus temperature by quaternary and quinary additions are associated with the enhanced GFA and the enlarged ΔTx. Development of new Ni-based amorphous alloys with high GFA and large ΔTx expands structural application of amorphous alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 644: Symposium L – Supercooled Liquid, Bulk Glassy and Nanocrystalline State of Alloys , 2000 , L4.8
Copyright
Copyright © Materials Research Society 2001

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