TY - JOUR
T1 - Solidification microstructure evolution and its correlations with mechanical properties and damping capacities of Mg-Al-based alloy fabricated using wire and arc additive manufacturing
AU - Wang, Zihong
AU - Wang, Jingfeng
AU - Lin, Xin
AU - Kang, Nan
AU - Zhang, Tianchi
AU - Wang, Yanfang
AU - Wang, Li
AU - Dang, Cong
AU - Huang, Weidong
N1 - Publisher Copyright:
© 2022
PY - 2023/5/1
Y1 - 2023/5/1
N2 - Magnesium (Mg) alloys, as the lightest metal structural material with good damping capacities, have important application prospects in realizing structural lightweight and vibration reduction. However, their engineering application is greatly limited by poor plastic formability. Wire and arc additive manufacturing (WAAM) provides a potential approach for fabricating large-scale Mg alloy components with high manufacturing flexibility. In this study, the evolution of the solidification microstructure of a WAAM-processed Mg-Al-based alloy was quantitatively analyzed based on the analytical models; then, the correlations between the solidification microstructure and mechanical properties/damping capacities were investigated. The results revealed that the WAAM-processed Mg-Al-based alloy with an equiaxed-grain-dominated microstructure displayed a simultaneous enhancement in mechanical properties and damping capacities compared to those of the cast Mg-Al-based alloy. The good combination of mechanical properties and damping capacities are mainly attributed to the weakened basal texture with a relatively high Schmid factor for basal 〈a〉 slip, the twinning-induced plasticity (TWIP) effect associated with the profuse {10–12} tensile twinning, and the relatively high dislocation density caused by the thermal stress during the WAAM process.
AB - Magnesium (Mg) alloys, as the lightest metal structural material with good damping capacities, have important application prospects in realizing structural lightweight and vibration reduction. However, their engineering application is greatly limited by poor plastic formability. Wire and arc additive manufacturing (WAAM) provides a potential approach for fabricating large-scale Mg alloy components with high manufacturing flexibility. In this study, the evolution of the solidification microstructure of a WAAM-processed Mg-Al-based alloy was quantitatively analyzed based on the analytical models; then, the correlations between the solidification microstructure and mechanical properties/damping capacities were investigated. The results revealed that the WAAM-processed Mg-Al-based alloy with an equiaxed-grain-dominated microstructure displayed a simultaneous enhancement in mechanical properties and damping capacities compared to those of the cast Mg-Al-based alloy. The good combination of mechanical properties and damping capacities are mainly attributed to the weakened basal texture with a relatively high Schmid factor for basal 〈a〉 slip, the twinning-induced plasticity (TWIP) effect associated with the profuse {10–12} tensile twinning, and the relatively high dislocation density caused by the thermal stress during the WAAM process.
KW - Damping capacities
KW - Magnesium alloy
KW - Mechanical properties
KW - Microstructure evolution
KW - Wire and arc additive manufacturing
UR - http://www.scopus.com/inward/record.url?scp=85143139921&partnerID=8YFLogxK
U2 - 10.1016/j.jmst.2022.10.019
DO - 10.1016/j.jmst.2022.10.019
M3 - 文章
AN - SCOPUS:85143139921
SN - 1005-0302
VL - 144
SP - 28
EP - 44
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
ER -