TY - JOUR
T1 - Alloying effects on the plasticity of magnesium
T2 - Comprehensive analysis of influences of all five slip systems
AU - Ding, Zhigang
AU - Zhao, Guangxuan
AU - Sun, Hao
AU - Li, Shuang
AU - Ma, Fei
AU - Lavernia, Enrique J.
AU - Zhu, Yuntian
AU - Liu, Wei
N1 - Publisher Copyright:
© 2019 IOP Publishing Ltd.
PY - 2020
Y1 - 2020
N2 - Low plasticity has been a major issue for the application of Mg alloys. Here, based on the generalized stacking fault energy curves and Arrhenius equation, we systematically study alloying effects on the stacking fault energies and the activation probability of basal and non-basal a, and pyramidal c + a slip systems in twenty-one Mg alloys. Our results reveal that activation of c + a slip systems on pyramidal II plane can significantly improve the plasticity. For example, Ca is found to promote the activation probability of this slip system by one order of magnitude and dramatically improve the plasticity of Mg.
AB - Low plasticity has been a major issue for the application of Mg alloys. Here, based on the generalized stacking fault energy curves and Arrhenius equation, we systematically study alloying effects on the stacking fault energies and the activation probability of basal and non-basal a, and pyramidal c + a slip systems in twenty-one Mg alloys. Our results reveal that activation of c + a slip systems on pyramidal II plane can significantly improve the plasticity. For example, Ca is found to promote the activation probability of this slip system by one order of magnitude and dramatically improve the plasticity of Mg.
KW - density functional theory
KW - magnesium alloy
KW - plasticity
KW - slip system
KW - stacking fault energy
UR - https://www.scopus.com/pages/publications/85075813971
U2 - 10.1088/1361-648X/ab445d
DO - 10.1088/1361-648X/ab445d
M3 - 文章
C2 - 31519010
AN - SCOPUS:85075813971
SN - 0953-8984
VL - 32
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 1
M1 - 015401
ER -