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Title: Correlation between strain rate sensitivity and α relaxation of metallic glasses

Abstract

An inherent correlation between the strain rate sensitivity and α relaxation of metallic glasses (MGs) is observed. This correlation can be attributed to the secondary term which incorporates the nonaffine displacements of atoms in the analytical expression of the elastic modulus of amorphous solids. The observed correlation supports the proposition that stress and temperature play equivalent role in the glass transition of MGs. Besides, an ideal liquid state of MGs is observed in the supercooled liquid region when they are deformed below a critical loading rate. This observation would benefit the application of MGs in the fabrication of micro parts for MEMS (Micro Electro-Mechanical Systems).

Authors:
;  [1];  [1];  [2]
  1. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22611423
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 7; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CORRELATIONS; MAGNESIUM SULFIDES; MEMS; METALLIC GLASSES; RELAXATION; SENSITIVITY; SOLIDS; STRAIN RATE; STRAINS; STRESSES

Citation Formats

Zhang, M., Wang, Y. J., Dai, L. H., E-mail: lhdai@lnm.imech.ac.cn, and State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 10081. Correlation between strain rate sensitivity and α relaxation of metallic glasses. United States: N. p., 2016. Web. doi:10.1063/1.4960377.
Zhang, M., Wang, Y. J., Dai, L. H., E-mail: lhdai@lnm.imech.ac.cn, & State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 10081. Correlation between strain rate sensitivity and α relaxation of metallic glasses. United States. doi:10.1063/1.4960377.
Zhang, M., Wang, Y. J., Dai, L. H., E-mail: lhdai@lnm.imech.ac.cn, and State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 10081. 2016. "Correlation between strain rate sensitivity and α relaxation of metallic glasses". United States. doi:10.1063/1.4960377.
@article{osti_22611423,
title = {Correlation between strain rate sensitivity and α relaxation of metallic glasses},
author = {Zhang, M. and Wang, Y. J. and Dai, L. H., E-mail: lhdai@lnm.imech.ac.cn and State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 10081},
abstractNote = {An inherent correlation between the strain rate sensitivity and α relaxation of metallic glasses (MGs) is observed. This correlation can be attributed to the secondary term which incorporates the nonaffine displacements of atoms in the analytical expression of the elastic modulus of amorphous solids. The observed correlation supports the proposition that stress and temperature play equivalent role in the glass transition of MGs. Besides, an ideal liquid state of MGs is observed in the supercooled liquid region when they are deformed below a critical loading rate. This observation would benefit the application of MGs in the fabrication of micro parts for MEMS (Micro Electro-Mechanical Systems).},
doi = {10.1063/1.4960377},
journal = {AIP Advances},
number = 7,
volume = 6,
place = {United States},
year = 2016,
month = 7
}