Li-xin Hong, Rong-xiang Wang, and Xiao-bo 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. https://doi.org/10.1007/s12613-021-2264-8
Cite this article as:
Li-xin Hong, Rong-xiang Wang, and Xiao-bo 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. 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

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  • 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, 0.5, and 1 wt%) 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 1 wt% Nd addition of the alloy.
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