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Metals 2016, 6(8), 191; doi:10.3390/met6080191

Serration Behavior in Pd77.5Cu6Si16.5 Alloy

College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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Author to whom correspondence should be addressed.
Academic Editors: Michael C. Gao and Junwei Qiao
Received: 18 May 2016 / Revised: 1 August 2016 / Accepted: 1 August 2016 / Published: 17 August 2016
(This article belongs to the Special Issue High-Entropy Alloys (HEAs))
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Abstract

The strain-rate-dependent plasticity under uniaxial compression at the strain rates of 2 × 10−3, 2 × 10−4 and 2 × 10−5 s−1 in a Pd77.5Cu6Si16.5 alloy is investigated. At different strain rates, the serration events exhibit different amplitudes and time scales. The intersection effects take place obviously, and the loading time is much longer than the relaxation time in the serration event at three strain rates. However, the time intervals between two neighboring serrations lack any time scale, and the elastic energy density displays a power-law distribution at the strain rate of 2 × 10−3 s−1, which means that the self-organized critical (SOC) behavior emerges with increasing strain rates. View Full-Text
Keywords: multi-component alloys; serrated flow; self-organized critical behavior multi-component alloys; serrated flow; self-organized critical behavior
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, Z.; Li, J.; Yuan, B.; Wu, R.; Fan, J.; Wang, B. Serration Behavior in Pd77.5Cu6Si16.5 Alloy. Metals 2016, 6, 191.

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