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Sm-based Sm–Al–Ni ternary bulk metallic glasses

Published online by Cambridge University Press:  03 March 2011

J. Wu ,
Q. Wang ,
J.B. Qiang ,
F. Chen ,
C. Dong ,
Y.M. Wang  and
C.H. Shek
J. Wu
Affiliation:
State Key Laboratory of Materials Modification & Department of Materials Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
Q. Wang
Affiliation:
State Key Laboratory of Materials Modification & Department of Materials Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
J.B. Qiang
Affiliation:
State Key Laboratory of Materials Modification & Department of Materials Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
F. Chen
Affiliation:
State Key Laboratory of Materials Modification & Department of Materials Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
C. Dong*
Affiliation:
State Key Laboratory of Materials Modification & Department of Materials Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
Y.M. Wang
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Hong Kong
C.H. Shek
Affiliation:
Department of Physics and Materials Science, City University of Hong Kong, Hong Kong
*
a) Address all correspondence to this author.e-mail: [email protected]
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Abstract

The Sm-based Sm–Al–Ni glass-forming system was investigated using our e/a- and cluster-related criteria. Three bulk metallic glasses (BMGs) Sm54Al23Ni23, Sm56Al22Ni22, and Sm58Al21Ni21 were obtained by suction casting into rods with a diameter of 3 mm. All of them shared a constant e/a = 1.5 and fell along the e/a-constant composition line in the ternary composition chart. The Sm54Al23Ni23 BMG exhibiting the largest Trg was located at the intersection point of the e/a-constant line and the Sm7Ni3-Al cluster line, with thermodynamic parameters of Tg = 548 K at a heating rate of 20 K/min, Tg/Tm = 0.634, and Tg/Tl = 0.615. The Sm7Ni3 cluster was a capped trigonal prism derived from the SmNi phase.

Keywords

AlloyAmorphousPhysical vapor deposition (PVD)
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 3 , March 2007 , pp. 573 - 577
Copyright
Copyright © Materials Research Society 2007

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