TY - JOUR
T1 - An investigation of ductility and microstructural evolution in an Al-3% Mg alloy with submicron grain size
AU - Wang, Jingtao
AU - Horita, Zenji
AU - Furukawa, Minoru
AU - Nemoto, Minoru
N1 - Funding Information:
One of us (JW) is grateful to the Faculty of Engineering, Kyushu University, for financial support. Electron microscopy was performed in the HVEM Laboratory of Kyushu University. This work was supported in part by the Light Metal Educational Foundation of Japan and in part by the National Science Foundation of the United States under Grant No. DMR-9115443.
PY - 1993/11
Y1 - 1993/11
N2 - A submicrometer-grained (SMG) A1-3% Mg solid solution alloy, with an initial grain size of ~0.2 μm was produced by intense plastic straining. Experiments show that tensile specimens of the SMG alloy exhibit high elongations to failure at low testing strain rates at the relatively low temperature of 403 K. The stress exponent is high (~7-8) and calculations show deformation is within the region of power-law breakdown. The initial microstructure of the alloy consists of diffuse boundaries between highly deformed grains. At strain rates of ~10-4 s-1 and lower, plastic deformation leads to dynamic recrystallization and the formation of highly nonequilibrium grain boundaries that gradually evolve into a more equilibrated configuration.
AB - A submicrometer-grained (SMG) A1-3% Mg solid solution alloy, with an initial grain size of ~0.2 μm was produced by intense plastic straining. Experiments show that tensile specimens of the SMG alloy exhibit high elongations to failure at low testing strain rates at the relatively low temperature of 403 K. The stress exponent is high (~7-8) and calculations show deformation is within the region of power-law breakdown. The initial microstructure of the alloy consists of diffuse boundaries between highly deformed grains. At strain rates of ~10-4 s-1 and lower, plastic deformation leads to dynamic recrystallization and the formation of highly nonequilibrium grain boundaries that gradually evolve into a more equilibrated configuration.
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U2 - 10.1557/JMR.1993.2810
DO - 10.1557/JMR.1993.2810
M3 - Article
AN - SCOPUS:0027694688
SN - 0884-2914
VL - 8
SP - 2810
EP - 2818
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 11
ER -