期刊
SCRIPTA MATERIALIA
卷 130, 期 -, 页码 42-45出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.11.012
关键词
Grain coarsening; Room temperature; Driving force; Yield stress; Texture
类别
资金
- Austrian Science Fund (FWF) [P22648-N20, P27432-N20]
- Austrian Science Fund (FWF) [P27432] Funding Source: Austrian Science Fund (FWF)
Strong room-temperature grain coarsening in gold films on polyimide induced by cyclic uniaxial mechanical strain is demonstrated. Detailed electron backscatter diffraction analysis revealed that, in contrast to the predictions of shear-coupled grain boundary migration model, the grain coarsening is isotropic and coarsened grains do not exhibit any specific crystallographic orientations or misorientations to the neighboring grains. It is shown that a thermodynamic model where the driving force appears due to the difference in yield stresses between the grains with different sizes provides an adequate explanation of the experimental data. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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