Metallurgical Abstracts on Light Metals and Alloys vol.56
Work-hardening behavior of a ZX10 Magnesium alloy sheet under monotonic and reverse loadings
Takayuki Hama1, Koichi Higuchi1, Hikaru Yoshida1 and Yuri Jono2
1 Graduate School of Energy Science, Kyoto University, Japan
2 Sumitomo Electric Industries, Ltd., Japan
[Published in Key Engineering Materials, Vol. 926, (2022), pp.926–932]
https://doi.org/10.4028/p-7bgcsj
E-mail: hama[at]energy.kyoto-u.ac.jp
Key Words: Magnesium alloy, Work hardening, Twinning, Detwinning, Reverse loading
In the present study, the work-hardening behavior of a rolled Mg-1.5mass%Zn-0.1mass%Ca (ZX10Mg) alloy sheet under monotonic and reverse loadings was investigated in detail experimentally. The microstructures of prestrained samples were also measured by means of EBSD measurements. Under monotonic tension, the stress in the rolling direction is higher than that in the transverse direction. A plateau region appears only in the transverse direction. Under monotonic compression, plateau regions appear in both the rolling and transverse directions. The in-plane anisotropy is less pronounced than that under tension. Under reverse loading from compression to tension, a sigmoidal curve appears during tension regardless of the loading direction. The sigmoidal trend depends strongly on the loading direction. The mechanisms that induce the abovementioned anisotropic deformation are discussed in terms of the difference in twinning and detwinning activities.
True stress-true strain curves under reverse loadings. The solid and broken lines denote the results in the rolling and transverse directions, respectively.