TY - JOUR
T1 - Enhanced grain growth in an Al-Mg alloy with ultrafine grain size
AU - Wang, Jingtao
AU - Furukawa, Minoru
AU - Horita, Zenji
AU - Nemoto, Minoru
AU - Valiev, Ruslan Z.
AU - Langdon, Terence G.
N1 - Funding Information:
This work was supported in part by the Light Metal Educational Foundation of Japan, in part by the NATO Scientific and Environmental Affairs Division under Collaborative Research Grant No. HTECH. CRG 940033, and in part by the National Science Foundation of the United States under Grants No. INT-9404693 and DMR-9115443.
PY - 1996/10/15
Y1 - 1996/10/15
N2 - A submicrometer-grained (SMG) microstructure, with an average grain size of ∼0.2 μm, was introduced into an Al-3% Mg solid solution alloy by equal-channel angular pressing. The SMG structure was heterogeneous with regions of equiaxed and elongated grains and with grain boundaries in a non-equilibrium configuration. Samples were annealed for various times at a temperature of 473 K and then examined using transmission electron microscopy. The results show that the grain boundaries evolve with time into an equilibrium condition and some limited grain growth occurs primarily in the grains where recovery has taken place. The results establish that the SMG structure is reasonably stable in the Al-3% Mg alloy at a temperature of 473 K.
AB - A submicrometer-grained (SMG) microstructure, with an average grain size of ∼0.2 μm, was introduced into an Al-3% Mg solid solution alloy by equal-channel angular pressing. The SMG structure was heterogeneous with regions of equiaxed and elongated grains and with grain boundaries in a non-equilibrium configuration. Samples were annealed for various times at a temperature of 473 K and then examined using transmission electron microscopy. The results show that the grain boundaries evolve with time into an equilibrium condition and some limited grain growth occurs primarily in the grains where recovery has taken place. The results establish that the SMG structure is reasonably stable in the Al-3% Mg alloy at a temperature of 473 K.
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U2 - 10.1016/0921-5093(96)10390-7
DO - 10.1016/0921-5093(96)10390-7
M3 - Article
AN - SCOPUS:0042037997
SN - 0921-5093
VL - 216
SP - 41
EP - 46
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - 1-2
ER -