Abstract
Two-phase ultrafine-grained (UFG) aluminum alloys with different precipitate and low-angle boundary distributions were examined for their monotonic stress-strain behavior. Precipitates in combination with low-angle grain boundaries were found to determine the deformation micro mechanism. It is proposed that thermally activated vacancy movement plays a central role in this regard. the experimental stress-strain curves matched well with the trend predicted by a modified Blum-Zheng model based on vacancy-assisted dislocation annihilation mechanism. © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Recommended Citation
P. S. De et al., "A Stress-strain Model for a Two-phase Ultrafine-grained Aluminum Alloy," Scripta Materialia, vol. 64, no. 1, pp. 57 - 60, Elsevier; Acta Materialia, Jan 2011.
The definitive version is available at https://doi.org/10.1016/j.scriptamat.2010.09.003
Department(s)
Materials Science and Engineering
Keywords and Phrases
Ductility; Grain boundaries; Orientation imaging microscopy (OIM); Ultrafine-grained microstructure
International Standard Serial Number (ISSN)
1359-6462
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Elsevier; Acta Materialia, All rights reserved.
Publication Date
01 Jan 2011
