TY - JOUR
T1 - Modeling grain boundary motion and dynamic recrystallization in pure metals
AU - Favre, Julien
AU - Fabrègue, Damien
AU - Piot, David
AU - Tang, Ning
AU - Koizumi, Yuichiro
AU - Maire, Eric
AU - Chiba, Akihiko
N1 - Funding Information:
The authors acknowledge the Ministry of Education, Science and Culture of Japan and the Region Rhone-Alpes in France for the financial support. The work was performed within the frame of the Japanese-French joint laboratory ELyT lab. The authors gratefully acknowledge C.R. Hutchinson and F. Montheillet for discussions during this work.
PY - 2013/12
Y1 - 2013/12
N2 - The current study proposes a new approach of modeling discontinuous dynamic recrystallization in pure copper and cobalt based on the inverse analysis of experimental data. This approach comprises two steps: First, the mobility of grain boundaries is determined by a meanfield model in the steady state regime, then in a second step the information collected (mobility, nucleation frequency) is used to determine the mechanical behavior and the grain size change. The nucleation criterion is reformulated in a more general expression, and a new expression of the nucleation frequency with a single empirical parameter is proposed. The model predicts the stress-strain curves and the evolution of mean grain size, and is in good agreement with experimental data for both copper and cobalt. The modeling procedure requires a minimum of initial material parameters and could be especially attractive in the case of complex metals and alloys for which these parameters are unknown.
AB - The current study proposes a new approach of modeling discontinuous dynamic recrystallization in pure copper and cobalt based on the inverse analysis of experimental data. This approach comprises two steps: First, the mobility of grain boundaries is determined by a meanfield model in the steady state regime, then in a second step the information collected (mobility, nucleation frequency) is used to determine the mechanical behavior and the grain size change. The nucleation criterion is reformulated in a more general expression, and a new expression of the nucleation frequency with a single empirical parameter is proposed. The model predicts the stress-strain curves and the evolution of mean grain size, and is in good agreement with experimental data for both copper and cobalt. The modeling procedure requires a minimum of initial material parameters and could be especially attractive in the case of complex metals and alloys for which these parameters are unknown.
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U2 - 10.1007/s11661-013-1914-5
DO - 10.1007/s11661-013-1914-5
M3 - Article
AN - SCOPUS:84892374534
VL - 44
SP - 5861
EP - 5875
JO - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
JF - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
SN - 1073-5623
IS - 13
ER -