TY - JOUR
T1 - Deformation behavior and dynamic recrystallization of biomedical Co-Cr-W-Ni (L-605) alloy
AU - Favre, Julien
AU - Koizumi, Yuichiro
AU - Chiba, Akihiko
AU - Fabregue, Damien
AU - Maire, Eric
N1 - Funding Information:
The authors are grateful to the Ministry of Education, Science and Culture of Japan and the Region Rhone-Alpes in France for the financial support. The study was performed within the framework of the Japanese–French joint laboratory ELyT lab.
PY - 2013/6
Y1 - 2013/6
N2 - The mechanical behavior of Co-20Cr-15W-10Ni alloy is studied by compression tests at high temperature. Microstructures after deformation are evaluated using SEM-EBSD. Significant grain refinement occurs by dynamic recrystallization for high temperatures and low strain rates [T > 1373 K (1100 C), strain rate <0.1 s-1], and at high strain rates (strain rate ∼10 s -1). Dynamic recrystallization is discontinuous and occurs by nucleation of grain boundaries, leading to a necklace-like structure. The nucleation mechanism is most likely bulging of grain boundaries. However, recrystallization occurs also by rotation of annealing twins, which can bulge as well. Modeling of the observed mechanical behavior gives a fair quantification of flow softening due to dynamic recrystallization, indicating the progress of dynamic recrystallization with deformation.
AB - The mechanical behavior of Co-20Cr-15W-10Ni alloy is studied by compression tests at high temperature. Microstructures after deformation are evaluated using SEM-EBSD. Significant grain refinement occurs by dynamic recrystallization for high temperatures and low strain rates [T > 1373 K (1100 C), strain rate <0.1 s-1], and at high strain rates (strain rate ∼10 s -1). Dynamic recrystallization is discontinuous and occurs by nucleation of grain boundaries, leading to a necklace-like structure. The nucleation mechanism is most likely bulging of grain boundaries. However, recrystallization occurs also by rotation of annealing twins, which can bulge as well. Modeling of the observed mechanical behavior gives a fair quantification of flow softening due to dynamic recrystallization, indicating the progress of dynamic recrystallization with deformation.
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U2 - 10.1007/s11661-012-1602-x
DO - 10.1007/s11661-012-1602-x
M3 - Article
AN - SCOPUS:84877037130
VL - 44
SP - 2819
EP - 2830
JO - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
JF - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
SN - 1073-5623
IS - 6
ER -