Spatial correlation of high-energy grain boundaries in two-dimensional simulated polycrystals

Journal Article · Thu Feb 01 00:00:00 EST 2007 · Acta Materialia

DOI:https://doi.org/10.1016/j.actamat.2006.09.047· OSTI ID:915515

Van Siclen, Clinton DeW

A polycrystal undergoes microstructural changes to reach a lower energy state. In particular, the system evolves so as to reduce the total grain boundary energy. A simple two-dimensional model of a polycrystal comprised of randomly oriented crystalline grains suggests that energy minimization reduces or eliminates any spatial correlation among high-energy grain boundaries. Thus grain boundary engineering not only reduces the density of high-energy boundaries, but it prevents their organization into a coarse, albeit discontinuous, network.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC07-99ID-13727
• OSTI ID: 915515
• Report Number(s): INL/JOU-06-11782; ACMAFD; TRN: US0804997
• Journal Information: Acta Materialia, Vol. 55, Issue 3; ISSN 1359-6454
• Country of Publication: United States
• Language: English

Related Subjects

36 - MATERIALS SCIENCE
GRAIN BOUNDARIES
MINIMIZATION
POLYCRYSTALS
grain boundaries
grain boundary engineering