Abstract : To investigate the effect of Al 8 Mn 4 Gd phase on microstructural and mechanical properties of Mg-Al-Ca magnesium alloy, two Mg-2.5Al 2 Ca and Mg-2.5Al 2 Ca-0.1Al 8 Mn 4 Gd alloys were designed and compared in this work. The results show that a small amount of Gd can significantly refine α-Mg grains and change the morphology of Al 2 Ca particles. Indeed, the formed Al 8 Mn 4 Gd phase could serve as a heterogeneous nucleation site for the α-Mg grains and Al 2 Ca particles. Furthermore, the introduction of Gd not only optimized the mechanical properties of Mg-Al-Ca alloy, but also facilitated the thermal deformation (such as hot rolling).
https://hal.univ-lorraine.fr/hal-03039711
Contributor : Antoine Guitton <>
Submitted on : Friday, December 4, 2020 - 7:49:53 AM Last modification on : Tuesday, January 26, 2021 - 2:41:16 PM
Chaosheng Ma, Wenbo Yu, Xufeng Pi, Antoine Guitton. Study of Mg–Al–Ca magnesium alloy ameliorated with designed Al8Mn4Gd phase. Journal of Magnesium and Alloys, Elsevier, 2020, 8 (4), pp.1084-1089. ⟨10.1016/j.jma.2020.08.009⟩. ⟨hal-03039711⟩