Achieving high mechanical performance of the large-scale sand-casting Mg–4Y–x nd–y Gd–0.4Zr alloys by tailoring Nd and Gd contents
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In: Materials Science and Engineering: A, Vol. 900, 146476, 05.2024.
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TY - JOUR
T1 - Achieving high mechanical performance of the large-scale sand-casting Mg–4Y–x nd–y Gd–0.4Zr alloys by tailoring Nd and Gd contents
AU - Yang, Lixiang
AU - Shi, Hui
AU - Huang, Yuanding
AU - Wang, Kun
AU - Dong, Xiwang
AU - Wu, Hai
AU - Lu, Chong
AU - Gan, Weimin
AU - Maawad, Emad
AU - Sun, Baode
AU - Li, Zhongquan
AU - Hort, Norbert
AU - Xiao, Lv
N1 - Publisher Copyright: © 2024 Elsevier B.V.
PY - 2024/5
Y1 - 2024/5
N2 - This research meticulously investigates the effects of varying contents of Nd and Gd, along with various heat treatment conditions, on the microstructure and mechanical characteristics of Mg–4Y-Nd-Gd-0.4Zr (wt.%) alloys within the commercial WE43 series, aiming to enhance mechanical performance while minimizing production costs. Findings reveal that Mg–4Y-1Nd-2Gd-0.4Zr alloy exhibits superior mechanical performances after undergoing a solution treatment at 500 °C for 14 h followed by peak-ageing at 200 °C for 120 h. Specifically, the ultimate tensile strength of 342.1 ± 4.9 MPa for the peak-aged Mg–4Y-1Nd-2Gd-0.4Zr alloy exceeds those of Mg–Y series alloys previously reported. The contribution of grain boundary, solid solution and precipitation strengthening is calculated to be 26.2 %, 17.3 %, and 56.5 % of actual yield strength in the peak-aged Mg–4Y-1Nd-2Gd-0.4Zr alloy, respectively, indicating that the precipitates β′ have an ascertainable influence on the yield strength. During deformation the basal slips could be effectively arrested by the prismatic β′ precipitates, leading to the augmentation of mechanical performance.
AB - This research meticulously investigates the effects of varying contents of Nd and Gd, along with various heat treatment conditions, on the microstructure and mechanical characteristics of Mg–4Y-Nd-Gd-0.4Zr (wt.%) alloys within the commercial WE43 series, aiming to enhance mechanical performance while minimizing production costs. Findings reveal that Mg–4Y-1Nd-2Gd-0.4Zr alloy exhibits superior mechanical performances after undergoing a solution treatment at 500 °C for 14 h followed by peak-ageing at 200 °C for 120 h. Specifically, the ultimate tensile strength of 342.1 ± 4.9 MPa for the peak-aged Mg–4Y-1Nd-2Gd-0.4Zr alloy exceeds those of Mg–Y series alloys previously reported. The contribution of grain boundary, solid solution and precipitation strengthening is calculated to be 26.2 %, 17.3 %, and 56.5 % of actual yield strength in the peak-aged Mg–4Y-1Nd-2Gd-0.4Zr alloy, respectively, indicating that the precipitates β′ have an ascertainable influence on the yield strength. During deformation the basal slips could be effectively arrested by the prismatic β′ precipitates, leading to the augmentation of mechanical performance.
KW - Large-scale sand-casting
KW - Mechanical performance
KW - Mg–Y-Nd-Gd-Zr
KW - Precipitates
KW - Strengthening mechanism
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85190790138&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2024.146476
DO - 10.1016/j.msea.2024.146476
M3 - Journal articles
AN - SCOPUS:85190790138
VL - 900
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
SN - 0921-5093
M1 - 146476
ER -