Pore and grain boundary migration under a temperature gradient: A phase-field model study

Journal Article · Wed Mar 16 00:00:00 EDT 2016 · Modelling and Simulation in Materials Science and Engineering

DOI:https://doi.org/10.1088/0965-0393/24/3/035019· OSTI ID:1294278

Biner, S. B. ^[1]

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1. Idaho National Lab. (INL), Idaho Falls, ID (United States)

In this study, the collective migration behavior of pores and grain boundaries under a temperature gradient is studied for simple single crystal, bi-crystal and polycrystal configurations with a phase-field model formulism. For simulation of the microstructure of solids, composed of pores and grain boundaries, the results indicate that not only the volume fraction of pores, but also its spatial partitioning between the grain boundary junctions and the grain boundary segments appears to be important. In addition to various physical properties, the evolution kinetics, under given temperature gradients, will be strongly influenced with the initial morphology of a poly-crystalline microstructure.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC07-05ID14517
• OSTI ID: 1294278
• Report Number(s): INL/JOU-15-35523
• Journal Information: Modelling and Simulation in Materials Science and Engineering, Vol. 24, Issue 3; ISSN 0965-0393
• Publisher: IOP Publishing
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
phase-field model
pore and grain boundary migration