TY - JOUR
T1 - Enhanced mechanical properties in fully recrystallized ultrafine grained ZKX600 Mg alloy
AU - Zheng, Ruixiao
AU - Bhattacharjee, Tilak
AU - Gao, Si
AU - Gong, Wu
AU - Shibata, Akinobu
AU - Sasaki, Taisuke
AU - Hono, Kazuhiro
AU - Tsuji, Nobuhiro
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - Mg-Zn-Zr-Ca (ZKX600) alloy specimens with various fully recrystallized grain sizes ranging from 0.77 μm to 23.3 μm were fabricated by high pressure torsion (HPT) followed by subsequent annealing. Tensile tests carried out at room temperature revealed that ultrafine grained (UFG) specimens exhibited enhanced combinations of strength and ductility compared to their coarse-grained counterparts. Observation of deformation microstructures suggested that basal slip and {10-12} extension twinning were the dominant mechanisms during deformation of coarse grained specimens, while deformation twinning was significantly inhibited in the UFG specimens. Based on the observations it is proposed that non-basal slip activity is responsible for the enhanced mechanical properties, and should be the focus of further investigations.
AB - Mg-Zn-Zr-Ca (ZKX600) alloy specimens with various fully recrystallized grain sizes ranging from 0.77 μm to 23.3 μm were fabricated by high pressure torsion (HPT) followed by subsequent annealing. Tensile tests carried out at room temperature revealed that ultrafine grained (UFG) specimens exhibited enhanced combinations of strength and ductility compared to their coarse-grained counterparts. Observation of deformation microstructures suggested that basal slip and {10-12} extension twinning were the dominant mechanisms during deformation of coarse grained specimens, while deformation twinning was significantly inhibited in the UFG specimens. Based on the observations it is proposed that non-basal slip activity is responsible for the enhanced mechanical properties, and should be the focus of further investigations.
UR - https://www.scopus.com/pages/publications/85028301183
U2 - 10.1088/1757-899X/219/1/012055
DO - 10.1088/1757-899X/219/1/012055
M3 - 会议文章
AN - SCOPUS:85028301183
SN - 1757-8981
VL - 219
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012055
T2 - 38th Riso International Symposium on Materials Science
Y2 - 4 September 2017 through 8 September 2017
ER -