TY - JOUR
T1 - Characterization of plastic anisotropy of AA5182-O sheets during prestraining and subsequent annealing
AU - Wang, Kaifeng
AU - Zhou, Bonan
AU - Li, Jingjing
AU - Carsley, John E.
AU - Li, Yang
N1 - Funding Information:
• U.S. National Science Foundation Civil, Mechanical and Manufacturing Innovation (Grant Nos. 1363468 and 1651024).
Publisher Copyright:
© 2018 by ASME.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - This paper described the effects of prestraining and annealing on plastic anisotropy (r-value) of aluminum alloy 5182-O sheets including two prestrain paths and two annealing conditions. During the prestraining and annealing processes, r-value changed depending on prestrain paths and annealing conditions. Although there were slight changes of the normal anisotropy coefficient, r, during prestraining and annealing processes, the planar anisotropy coefficient, Dr, increased significantly, especially for the uniaxial prestrain condition. This could accelerate the development of earing during a sheet forming operation. Also, the corresponding sheet textures in rolling direction (RD)/TD plane after prestraining and annealing processes were observed through electron backscatter diffraction (EBSD) analysis to explain the r-value changes, where the viscoplastic self-consistent (VPSC) model was used to correlate the determined texture to measured r-values. It is found that the sheet texture also had significant changes relating to the prestrain paths and annealing conditions resulting in varied r-values.
AB - This paper described the effects of prestraining and annealing on plastic anisotropy (r-value) of aluminum alloy 5182-O sheets including two prestrain paths and two annealing conditions. During the prestraining and annealing processes, r-value changed depending on prestrain paths and annealing conditions. Although there were slight changes of the normal anisotropy coefficient, r, during prestraining and annealing processes, the planar anisotropy coefficient, Dr, increased significantly, especially for the uniaxial prestrain condition. This could accelerate the development of earing during a sheet forming operation. Also, the corresponding sheet textures in rolling direction (RD)/TD plane after prestraining and annealing processes were observed through electron backscatter diffraction (EBSD) analysis to explain the r-value changes, where the viscoplastic self-consistent (VPSC) model was used to correlate the determined texture to measured r-values. It is found that the sheet texture also had significant changes relating to the prestrain paths and annealing conditions resulting in varied r-values.
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U2 - 10.1115/1.4040157
DO - 10.1115/1.4040157
M3 - Article
AN - SCOPUS:85051061815
SN - 1087-1357
VL - 140
JO - Journal of Manufacturing Science and Engineering, Transactions of the ASME
JF - Journal of Manufacturing Science and Engineering, Transactions of the ASME
IS - 8
M1 - 081004
ER -