TY - JOUR
T1 - Influence of processing regimes on fine-grained microstructure development in an AlMgSc alloy by hot equal-channel angular pressing
AU - Sitdikov, Oleg
AU - Avtokratova, Elena
AU - Babicheva, Rita
AU - Sakai, Taku
AU - Tsuzaki, Kaneaki
AU - Watanabe, Yoshimi
PY - 2012
Y1 - 2012
N2 - Grain refinement during equal-channel angular pressing (ECAP) was studied in a commercial Al5.8% Mg0.3% Sc alloy at temperatures from 473 to 723K (̃0.50.8T m). The samples were quenched in water in every ECAP pass, which is a conventional cyclic process. ECAP to ε = 12 resulted in ultrafine-grained structures developed uniformly at high strains at 473 and 723 K, while processing at 573K led to the evolution of a duplex grain structure containing partially much coarser grains. In contrast, ECAP process continuously carried out to ε = 12 without interruption at 573 K, resulted in development of a uniform ultrafine-grained structure. Effects of processing regimes on microstructural evolution in the AlMgSc alloy are discussed.
AB - Grain refinement during equal-channel angular pressing (ECAP) was studied in a commercial Al5.8% Mg0.3% Sc alloy at temperatures from 473 to 723K (̃0.50.8T m). The samples were quenched in water in every ECAP pass, which is a conventional cyclic process. ECAP to ε = 12 resulted in ultrafine-grained structures developed uniformly at high strains at 473 and 723 K, while processing at 573K led to the evolution of a duplex grain structure containing partially much coarser grains. In contrast, ECAP process continuously carried out to ε = 12 without interruption at 573 K, resulted in development of a uniform ultrafine-grained structure. Effects of processing regimes on microstructural evolution in the AlMgSc alloy are discussed.
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U2 - 10.2320/matertrans.MD201108
DO - 10.2320/matertrans.MD201108
M3 - Review article
AN - SCOPUS:84858317016
VL - 53
SP - 56
EP - 62
JO - Materials Transactions
JF - Materials Transactions
SN - 0916-1821
IS - 1
ER -