2000/07/09 by D. Yesilleten, Dicle Yeşilleten, Yesilleten, D. +2
Engineering · Materials Science · Physics and Astronomy · #Advanced Materials Characterization Techniques #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Microstructure and mechanical properties #Surface and Thin Film Phenomena #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0007145
6 pages, 3 figures, 7 tables Replacement made minor changes to (a) the title and (b) the margin spacing
openalex publication_date 2000/07/09 · arxiv created 2000/07/30 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a systematic trend study of the symmetric tilt grain boundaries about the <110> axis in molybdenum. Our results show that multiple structural phases, some incorporating vacancies, compete for the boundary ground state. We find that at low external stress vacancies prefer to bind to the boundaries in high concentrations, and moreover, that external stress drives structural phase transitions which correspond to switching the boundaries on and off as pipe-diffusion pathways for vacancies. Finally, we present physical arguments which indicate these phenomena are likely to occur in the other bcc transition metals as well.