Influence of zinc and silver additions on hot tearing susceptibility of Mg-14Gd-0.4Zr alloy
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In: Journal of Rare Earths, 24.04.2024.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Influence of zinc and silver additions on hot tearing susceptibility of Mg-14Gd-0.4Zr alloy
AU - Yang, Lixiang
AU - Wang, Shaozhu
AU - Huang, Yuanding
AU - Hou, Zhengquan
AU - Wu, Hai
AU - Dong, Xiwang
AU - Shi, Hui
AU - Zou, Wenbing
AU - Li, Dejiang
AU - Li, Fei
AU - Sun, Baode
AU - Li, Zhongquan
AU - Hort, Norbert
AU - Xiao, Lv
N1 - Publisher Copyright: © 2024 Chinese Society of Rare Earths
PY - 2024/4/24
Y1 - 2024/4/24
N2 - The effects of 1Zn and/or 2Ag additions on the hot tearing susceptibility (HTS) of Mg-14Gd-0.4Zr (wt%) alloy were studied. The HTS was evaluated by both theoretical predictions using Kou's criterion and experimental observations based on the in situ force-temperature recorded constrained rod casting (ISFTCRC) method. The results show that the order of HTS from high to low is Mg-14Gd-2Ag–1Zn-0.4Zr, Mg-14Gd-2Ag-0.4Zr, Mg-14Gd-1Zn-0.4Zr and Mg-14Gd-0.4Zr. Adding 1Zn and/or 2Ag changes the solidification path and the solidification interval, which affects the hot tearing susceptibility. Alloying elemental 1Zn slightly increases the solidification interval and the temperature range in the square root of the solid phase fraction (ƒs1/2) range of 0.949–0.995, resulting in a slight increase in the hot tearing susceptibility. The addition of 2Ag drastically widens both the solidification interval and the temperature range in the ƒs1/2 range of 0.949–0.995, thus significantly increasing the hot tearing susceptibility. Compared to the addition of 2Ag alone, the broadening degree of both the solidification interval and the temperature range in the ƒs1/2 range of 0.949–0.995 is greater by adding the composite 2Ag/1Zn, which further promotes the occurrence of hot tearing. A narrower solidification interval and a temperature range in the ƒs1/2 range of 0.949–0.995 result in a lower hot tearing susceptibility.
AB - The effects of 1Zn and/or 2Ag additions on the hot tearing susceptibility (HTS) of Mg-14Gd-0.4Zr (wt%) alloy were studied. The HTS was evaluated by both theoretical predictions using Kou's criterion and experimental observations based on the in situ force-temperature recorded constrained rod casting (ISFTCRC) method. The results show that the order of HTS from high to low is Mg-14Gd-2Ag–1Zn-0.4Zr, Mg-14Gd-2Ag-0.4Zr, Mg-14Gd-1Zn-0.4Zr and Mg-14Gd-0.4Zr. Adding 1Zn and/or 2Ag changes the solidification path and the solidification interval, which affects the hot tearing susceptibility. Alloying elemental 1Zn slightly increases the solidification interval and the temperature range in the square root of the solid phase fraction (ƒs1/2) range of 0.949–0.995, resulting in a slight increase in the hot tearing susceptibility. The addition of 2Ag drastically widens both the solidification interval and the temperature range in the ƒs1/2 range of 0.949–0.995, thus significantly increasing the hot tearing susceptibility. Compared to the addition of 2Ag alone, the broadening degree of both the solidification interval and the temperature range in the ƒs1/2 range of 0.949–0.995 is greater by adding the composite 2Ag/1Zn, which further promotes the occurrence of hot tearing. A narrower solidification interval and a temperature range in the ƒs1/2 range of 0.949–0.995 result in a lower hot tearing susceptibility.
KW - Differential scanning calorimetry/thermal gravimetric (DSC/TG)
KW - Hot tearing
KW - Mg-Gd-Ag/Zn
KW - Rare earths
KW - Solidification interval
KW - Solidification path
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85200113618&partnerID=8YFLogxK
U2 - 10.1016/j.jre.2024.04.017
DO - 10.1016/j.jre.2024.04.017
M3 - Journal articles
AN - SCOPUS:85200113618
JO - Journal of Rare Earths
JF - Journal of Rare Earths
SN - 1002-0721
ER -