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research article
Grain boundary relaxation and grain growth in 18-carat yellow gold alloy
2012
A high-temperature anelastic relaxation peak in the mechanical loss spectrum of 18-carat yellow gold polycrystals is analysed and interpreted as due to grain boundary sliding accommodated predominantly by elastic deformation of the grains. The characteristic time scale of the relaxation process tvaries with the grain size d, and the grain size exponent is found to be m = 1.09 +/- 0.10 which is in perfect accord with the Zener model that attributes a grain boundary relaxation to viscous sliding along the grain boundaries. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Type
research article
Web of Science ID
WOS:000300810200015
Publication date
2012
Published in
Volume
66
Start page
374
End page
377
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
March 29, 2012
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