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The effects of tensile plastic deformation on the hardness and Young’s modulus of a bulk nanocrystalline alloy studied by nanoindentation

Published online by Cambridge University Press:  03 March 2011

G.J. Fan ,
W.H. Jiang ,
F.X. Liu ,
H. Choo ,
P.K. Liaw ,
B. Yang ,
L.F. Fu  and
N.D. Browning
G.J. Fan*
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
W.H. Jiang
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
F.X. Liu
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
H. Choo
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
P.K. Liaw
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996
B. Yang
Affiliation:
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, People’s Republic of China
L.F. Fu
Affiliation:
Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616
N.D. Browning
Affiliation:
Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616; and Materials Science and Technology Division, Chemistry and Materials Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550
*
a) Address all correspondence to this author. e-mail: gfan@utk.edu
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Abstract

A bulk nanocrystalline (nc) Ni–Fe alloy was subjected to tensile deformation, which leads to grain growth. The nanoindentation study indicates that the hardness, H, and Young’s modulus, E, of the nc alloy before and after tensile deformation did not show a clear indentation-rate effect. However, the tensile deformation results in a decrease in the E values of about 15%, which might be attributed to the grain rotation, leading to texture development during the stress-induced grain growth.

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Type
Articles
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Journal of Materials Research , Volume 22 , Issue 5 , May 2007 , pp. 1235 - 1239
Copyright
Copyright © Materials Research Society 2007

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References

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