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Mg–Ni–(Gd,Nd) bulk metallic glasses with improved glass-forming ability and mechanical properties

Published online by Cambridge University Press:  31 January 2011

J. Yin ,
G.Y. Yuan ,
Z.H. Chu ,
J. Zhang  and
W.J. Ding
J. Yin
Affiliation:
National Engineering Research Center of Light Alloys Net Forming, Shanghai Jiaotong University, Shanghai 200240, China
G.Y. Yuan*
Affiliation:
National Engineering Research Center of Light Alloys Net Forming, Shanghai; and State Key Laboratory of Metallic Matrix Composites, Shanghai Jiaotong University, Shanghai 200240, China
J. Zhang
Affiliation:
National Engineering Research Center of Light Alloys Net Forming, Shanghai Jiaotong University, Shanghai 200240, China
W.J. Ding
Affiliation:
National Engineering Research Center of Light Alloys Net Forming, Shanghai; and State Key Laboratory of Metallic Matrix Composites, Shanghai Jiaotong University, Shanghai 200240, China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

In this work, we report a new Mg-based glass-forming system of Mg–Ni–(Gd,Nd), which can be produced into glassy rods with maximum diameters of 2–5 mm by copper mold casting. The Mg75Ni15Gd10–xNdx(x = 0–10) BMGs simultaneously possess a high level of glass transition temperatures, high specific strength up to 2.75 × 105 Nm/kg, and enhanced malleability with plastic strains over 1%. In particular, the Mg75Ni15Gd5Nd5 BMG with the glass-forming ability (GFA) up to 5 mm, exhibited compressive yield strength over 900 MPa and plastic strain up to 50% without failure for the specimen with an aspect ratio of 0.5. The improved GFA and malleability for the Mg75Ni15Gd10–x Ndx(x = 0–10) BMGs were discussed, which exhibited their promising potentials for the application as lightweight engineering materials.

Keywords

AmorphousMgNd
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 6 , June 2009 , pp. 2130 - 2140
Copyright
Copyright © Materials Research Society 2009

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