Stress-driven migration of simple low-angle mixed grain boundaries
β Scribed by A.T. Lim; M. Haataja; W. Cai; D.J. Srolovitz
- Book ID
- 113415917
- Publisher
- Elsevier Science
- Year
- 2012
- Tongue
- English
- Weight
- 559 KB
- Volume
- 60
- Category
- Article
- ISSN
- 1359-6454
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π SIMILAR VOLUMES
We investigated the migration of a symmetric tilt, low-angle grain boundary (LAGB) under applied shear stress in the presence of extrinsic dislocations. The results demonstrate that there is a threshold stress for the LAGB to depin from extrinsic dislocations. Below the threshold stress, the LAGB re
Theoretical models are suggested that describe the effects of stress-driven migration of grain boundaries (GBs) on both the formation of nanoscale cracks (nanocracks) and the growth of comparatively large cracks in deformed nanocrystalline ceramics and metals. The GB migration under consideration is
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 (0-90Β°). Boundary migration under a shear stress was observed to be coupled to a lateral translation of