Experimental Evidence that the Onset of Mechanical Softening in Nanocrystalline Metals is Strain Rate Dependent

Abstract:

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This paper reports on the influence of strain rate on the onset of mechanical softening of nanocrystalline gold at room temperature. Micro-tensile testing was performed with applied strain rates on the order of 10−4 s−1 to 10−6 s−1. Our results defined a threshold strain rate, whereby plastic deformation at larger rates was dominated by dislocation processes and at smaller rates by one or more other deformation mechanisms.

Info:

Periodical:

Materials Science Forum (Volumes 633-634)

Edited by:

Yonghao Zhao and Xiaozhou Liao

Pages:

99-105

DOI:

10.4028/www.scientific.net/MSF.633-634.99

Citation:

L. W. Wang and B. C. Prorok, "Experimental Evidence that the Onset of Mechanical Softening in Nanocrystalline Metals is Strain Rate Dependent", Materials Science Forum, Vols. 633-634, pp. 99-105, 2010

Online since:

November 2009

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Price:

$35.00

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