TY - JOUR
T1 - Static softening following multistage hot deformation of 7150 aluminum alloy
T2 - Experiment and modeling
AU - Jiang, Fulin
AU - Zurob, Hatem S.
AU - Purdy, Gary R.
AU - Zhang, Hui
N1 - Funding Information:
This work is supported by Research Fund for the Doctoral Program of Higher Education of China ( 20130161110007 ), the China Scholarship Council ( 201306130021 ) and Hunan Provincial Innovation Foundation for Postgraduate ( CX2013B128 ).
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/11/11
Y1 - 2015/11/11
N2 - Previous studies have demonstrated that the static softening kinetics of 7150 aluminum alloy showed typical sigmoidal behavior at 400. °C and softening plateaus at 300. °C (F.L. Jiang, et al., Mater. Sci. Eng. A, vol. 552, 2012, pp. 269-275). In present work, the static softening mechanisms, the microstructural evolution during post-deformation holding was studied by optical microscopy, scanning electron microscope, electron back-scattered diffraction and transmission electron microscopy. It was demonstrated that recrystallization is essentially absent during post-deformation holding, and that static recovery was the main contribution to static softening. Strain induced precipitation and coarsening caused softening plateaus at 300. °C. In order to better understand the static softening mechanism, physically-based modeling, which integrated recovery and multicomponent particle coarsening modeling, was employed to rationalize the experimental results.
AB - Previous studies have demonstrated that the static softening kinetics of 7150 aluminum alloy showed typical sigmoidal behavior at 400. °C and softening plateaus at 300. °C (F.L. Jiang, et al., Mater. Sci. Eng. A, vol. 552, 2012, pp. 269-275). In present work, the static softening mechanisms, the microstructural evolution during post-deformation holding was studied by optical microscopy, scanning electron microscope, electron back-scattered diffraction and transmission electron microscopy. It was demonstrated that recrystallization is essentially absent during post-deformation holding, and that static recovery was the main contribution to static softening. Strain induced precipitation and coarsening caused softening plateaus at 300. °C. In order to better understand the static softening mechanism, physically-based modeling, which integrated recovery and multicomponent particle coarsening modeling, was employed to rationalize the experimental results.
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U2 - 10.1016/j.msea.2015.09.063
DO - 10.1016/j.msea.2015.09.063
M3 - Article
AN - SCOPUS:84942245017
SN - 0921-5093
VL - 648
SP - 164
EP - 177
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ER -