Microstructures and Mechanical Properties of AJ62 Magnesium Alloy with Y and Nd Elements
A series of Mg-6Al-2Sr-1.5Y-xNd (x=0, 0.3, 0.6, 0.9, 1.2) alloy samples were prepared and their microstructures were observed and mechanical properties were measured. The existing forms of Y and Nd were studied. The effects of Y and Nd on microstructure and mechanical properties of AJ62 alloy were investigated. The results show that the main existing forms of Y and Nd in AJ62 alloy are Al2Y and Al2Nd. The combined addition of rare earth Y and Nd can refine α-Mg matrix obviously and reduce the amount of the β-Mg17Al12 phases; after solid solution treatment, the tensile strength of the alloys rise first and fall later with increasing content of Nd. When the content of Nd is about 0.6%wt, the values of tensile strengthes are up to the maximum both at room temperature and at 448 K.
Yafang Han, Fusheng Pan, Jianmao Tang, Chungen Zhou
X. Ning et al., "Microstructures and Mechanical Properties of AJ62 Magnesium Alloy with Y and Nd Elements", Materials Science Forum, Vol. 686, pp. 253-259, 2011