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Deformation behavior and indentation size effect in amorphous and crystallized Pd40Cu30Ni10P20 alloy

Published online by Cambridge University Press:  31 January 2011

N. Li ,
L. Liu  and
K.C. Chan
L. Liu*
Affiliation:
State Key Lab for Materials Processing and Die & Mold Technology, Huazhong University of Science and Technology, 430074 Wuhan, People's Republic of China
K.C. Chan
Affiliation:
Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: lliu2000@mail.hust.edu.cn
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Abstract

The deformation behavior and indentation size effect (ISE) in amorphous and crystallized Pd40Cu30Ni10P20 alloy were comparatively studied through instrumented nanoindentation. It was found that the two alloys showed different deformation behaviors, the amorphous alloy exhibited conspicuous pop-in events in the load-depth (P-h) curve, while the crystallized alloy showed a relatively smooth P-h curve. In addition, the indentation hardness was observed to decrease with increasing penetration depth in the two alloys, exhibiting a significant ISE. However, the crystallized alloy displayed a sharper reduction of hardness with indentation depth as compared to the amorphous alloy, indicating a more significant indentation size effect in the crystalline alloy. The structure difference and friction factor associated with the surface residual stress are taken into account to interpret the difference in the deformation behavior and indentation size effect of the two alloys.

Keywords

AmorphousCrystallineHardness
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 5 , May 2009 , pp. 1693 - 1699
Copyright
Copyright © Materials Research Society 2009

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