The driving force governing room temperature grain coarsening in thin gold films

Oleksandr Glushko, Megan Cordill

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)42-45
Number of pages4
JournalScripta Materialia
Volume130.2017
Issue number15 March
Early online date17 Nov 2016
DOIs
Publication statusPublished - 2017

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