Affiliation:
1. Korea Advanced Institute of Science and Technology
Abstract
Flat surfaces and grain boundaries lying on low crystal planes are singular corresponding to the cusps in the polar (Wulff) plots of their energy against their orientation. The theoretical analysis of the entropy effect at high temperatures shows that these interfaces undergo roughening transitions. The molecular dynamics simulations also show disordering to liquid-like structures at high temperatures that can be interpreted as the roughening transition. Experimentally, singular flat surfaces and grain boundaries become curved at high temperatures or with additives, indicating their roughening transition. The grain boundaries in polycrystals are often faceted with hill-and-valley shapes and their defaceting at high temperatures also show their roughening transition.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference100 articles.
1. W.K. Burton and N. Cabrera: Dis. Faraday Soc. Vol. 5 (1949), p.33.
2. W.K. Burton, N. Cabrera and F.C. Frank: Phil. Trans. R. Soc., London, Sect. A Vol. 243 (1951), p.299.
3. F.C. Frank, in Metal Surfaces: Structure, Energetics, and Kinetics, edited by W.D. Robertson and N.A. Gjostein (American Society for Metals, Metals Park, OH 1963), p.1.
4. J.D. Weeks and G.H. Gilmer, in Advances in Chemical Physics, Vol. 40, edited by I. Prigogine and S.A. Rice (Wiley, NY 1979), p.157.
5. J.D. Weeks, in Ordering in Strongly Fluctuating Condensed Matter Systems, edited by T. Riste (Plenum, New York 1980), p.293.
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