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Shape of moving grain boundaries in Al-bicrystals

โœ Scribed by J.Ch. Verhasselt; G. Gottstein; D.A. Molodov; L.S. Shvindlerman

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
182 KB
Volume
47
Category
Article
ISSN
1359-6454

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โœฆ Synopsis

AbstractรIt is common knowledge that grain boundary migration determines microstructure evolution and thus, aects the properties of polycrystals. The principal parameter which controls the motion of a grain boundary is the grain boundary mobility. In practically all relevant cases the motion of a straight grain boundary is the exception rather than the rule. That is why the shape of a moving grain boundary is of interest, and it will be shown that the grain boundary shape is a source of new, interesting and useful ยฎndings concerning grain boundary motion, in particular for the interaction of a moving grain boundary with mobile particles. The experimentally derived shape of a grain boundary ``quarter-loop'' (Masteller and

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Stress-driven migration of symmetrical ใ€ˆ
Stress-driven migration of symmetrical ใ€ˆ1 0 0ใ€‰ tilt grain boundaries in Al bicrystals
โœ Tatiana Gorkaya; Dmitri A. Molodov; Gรผnter Gottstein ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 594 KB

Stress-induced migration of planar grain boundaries in aluminum bicrystals was measured for both low-and high-angle symmetrical h1 0 0i tilt grain boundaries across the entire misorientation range (0-90ยฐ). Boundary migration under a shear stress was observed to be coupled to a lateral translation of