Bulletin of the American Physical Society
APS March Meeting 2013
Volume 58, Number 1
Monday–Friday, March 18–22, 2013; Baltimore, Maryland
Session G47: Invited Session: Elasticity and Plasticity Outside of Equilibrium: Modeling From Micro to Meso Scales
11:15 AM–2:15 PM,
Tuesday, March 19, 2013
Hilton Baltimore Room: Holiday Ballroom 6
Sponsoring Unit: GSNP
Chair: Zhi Feng Huang, Wayne State University
Abstract ID: BAPS.2013.MAR.G47.2
Abstract: G47.00002 : Connecting grain boundary properties to microstructural evolution in polycrystalline metals*
11:51 AM–12:27 PM
Preview Abstract Abstract
(Carnegie Mellon University)
Within the last decade, both computational and experimental methods have evolved to the point that large-scale surveys of grain boundary properties have become tractable. Such studies have provided new information and insight about boundary structure, energetics, motion mechanisms, and mobility on a scale that invites application to polycrystalline systems. However, the complex behavior revealed in these studies often generates as many questions as it answers. This presentation will review pertinent computational and experimental studies of grain boundary properties in FCC metals, concentrating on boundary energy and mobility. The goal will be to identify the microstructural signatures of boundary properties in polycrystalline grain boundary networks. Topics will include how boundary energy and mobility trends manifest in real microstructures; the effects of shear coupling on boundary motion in bicrystals and polycrystals; the significance of boundaries that move in a non-thermally-activated manner to low temperature grain growth; and the consequences of the thermal roughening transition on grain stagnation. In each case, individual grain boundary properties couple with the characteristics of the grain boundary network to generate diverse microstructural outcomes.
*Supported in part by the US Department of Energy Office of Basic Energy Sciences.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2013.MAR.G47.2
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