Lixin Hong, Rongxiang Wang, and Xiaobo Zhang, Effects of Nd on microstructure and mechanical properties of as-cast Mg–12Gd–2Zn–xNd–0.4Zr alloys with stacking faults, Int. J. Miner. Metall. Mater., 29(2022), No. 8, pp. 1570-1577. https://doi.org/10.1007/s12613-021-2264-8
Cite this article as:
Lixin Hong, Rongxiang Wang, and Xiaobo Zhang, Effects of Nd on microstructure and mechanical properties of as-cast Mg–12Gd–2Zn–xNd–0.4Zr alloys with stacking faults, Int. J. Miner. Metall. Mater., 29(2022), No. 8, pp. 1570-1577. https://doi.org/10.1007/s12613-021-2264-8
Research Article

Effects of Nd on microstructure and mechanical properties of as-cast Mg–12Gd–2Zn–xNd–0.4Zr alloys with stacking faults

+ Author Affiliations
  • Corresponding author:

    Xiaobo Zhang    E-mail: xbxbzhang2003@163.com

  • Received: 24 November 2020Revised: 11 January 2021Accepted: 29 January 2021Available online: 2 February 2021
  • In order to study the effects of Nd addition on microstructure and mechanical properties of Mg–Gd–Zn–Zr alloys, the microstructure and mechanical properties of the as-cast Mg–12Gd–2Zn–xNd–0.4Zr (x = 0, 0.5wt%, and 1wt%) alloys were investigated by using optical microscope, scanning electron microscope, X-ray diffractometer, nano indentation tester, microhardness tester, and tensile testing machine. The results show that the microstructures mainly consist of α-Mg matrix, eutectic phase, and stacking faults. The addition of Nd plays a significant role in grain refinement and uniform microstructure. The tensile yield strength and microhardness increase but the compression yield strength decreases with increasing Nd addition, leading to weakening tension–compression yield asymmetry in reverse of the Mg–12Gd–2Zn–xNd–0.4Zr alloys. The highest ultimate tensile strength (194 MPa) and ultimate compression strength (397 MPa) are obtained with 1wt% Nd addition of the alloy.
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