Research output: Contribution to journal › Article › peer-review
Mechanisms of precipitation induced by large strains in the Al-Cu system. / Nasedkina, Y.; Sauvage, X.; Bobruk, E. V.; Murashkin, M. Yu; Valiev, R. Z.; Enikeev, N. A.
In: Journal of Alloys and Compounds, Vol. 710, 2017, p. 736-747.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Mechanisms of precipitation induced by large strains in the Al-Cu system
AU - Nasedkina, Y.
AU - Sauvage, X.
AU - Bobruk, E. V.
AU - Murashkin, M. Yu
AU - Valiev, R. Z.
AU - Enikeev, N. A.
PY - 2017
Y1 - 2017
N2 - The strain induced decomposition of super saturated solid solutions of Cu in Al has been experimentally investigated. A solutionized Al-Cu alloy has been severely deformed by high pressure torsion at room temperature at different strain levels. The resulting microstructures have been systematically characterized using transmission electron microscopy and atom probe tomography. It is established that Cu rich particles nucleate and quickly grow along boundaries during deformation, leading to a full decomposition of the solid solution. Besides, a significant and systematic Cu segregation along grain boundaries has been revealed. Based on these experimental data, the contribution of deformation induced vacancies, dislocations and boundaries were considered to account for the strain induced precipitation. It is concluded that the collection of solutes by moving boundaries might be considered as an important mechanism leading to strain induced precipitation.
AB - The strain induced decomposition of super saturated solid solutions of Cu in Al has been experimentally investigated. A solutionized Al-Cu alloy has been severely deformed by high pressure torsion at room temperature at different strain levels. The resulting microstructures have been systematically characterized using transmission electron microscopy and atom probe tomography. It is established that Cu rich particles nucleate and quickly grow along boundaries during deformation, leading to a full decomposition of the solid solution. Besides, a significant and systematic Cu segregation along grain boundaries has been revealed. Based on these experimental data, the contribution of deformation induced vacancies, dislocations and boundaries were considered to account for the strain induced precipitation. It is concluded that the collection of solutes by moving boundaries might be considered as an important mechanism leading to strain induced precipitation.
KW - Aluminum
KW - Diffusion
KW - Grain boundaries
KW - Precipitation
KW - Severe plastic deformation
UR - http://www.scopus.com/inward/record.url?scp=85016501138&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2017.03.312
DO - 10.1016/j.jallcom.2017.03.312
M3 - Article
AN - SCOPUS:85016501138
VL - 710
SP - 736
EP - 747
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -
ID: 16948528