根据计算得到的合金相含量随温度变化曲线，可以得到合金不同温度下的平衡组

The content of the alloy phase change curve calculated with temperature, can be balanced, and the volume fraction of tissue at different temperature of the alloy. As shown in FIG. 1-5,1-6,1-7,1-8 respectively as Mg-8.0Gd-4.5Y, Mg-8.0Gd-4.5Y-0.7Zn, Mg-8.0Gd-4.5Y-1.4Zn, phase content of alloy mg-8.0Gd-4.5Y-3.2Zn versus temperature. See, for Mg-8.0Gd-4.5Y alloy, homogenization heat treatment can be completely re-dissolving the second phase, to give a single α-Mg matrix, after adding Zn, even after the alloying treatment persists LPSO structural phase, and LPSO structure phase content increases as the Zn content increases.

According to the calculated alloy phase content with temperature change curve, the balance organization and volume fraction of the alloy at different temperatures can be obtained. Figures 1-5, 1-6, 1-7, 1-8 show the temperature curve of Mg-8.0Gd-4.5Y, Mg-8.0Gd-4.5Y-0.7Zn, Mg-8.0Gd-4.5Y-1.4Zn, Mg-8.0Gd-4.5Y-3.Zn alloy phase. It can be seen that for mg-8.0Gd-4.5Y alloy, the second phase can be completely back-soluble by homogenized heat treatment, a single alpha-Mg substrate can be obtained, after adding Zn, the alloy homogenization treatment still exists LPSO structure phase, and the LPSO structure phase content increases with the increase of Zn content.

According to the calculated curve of phase content with temperature, the equilibrium structure and volume fraction of the alloy at different temperatures can be obtained. Fig. 1-5, 1-6, 1-7 and 1-8 show the temperature dependence curves of mg-8.0gd-4.5y, mg-8.0gd-4.5y-0.7zn, mg-8.0gd-4.5y-1.4zn and mg-8.0gd-4.5y-3.2zn alloy phase contents, respectively. It can be seen that for mg-8.0gd-4.5y alloy, the second phase can be completely dissolved through homogenization heat treatment to obtain a single α - Mg matrix. After adding Zn, there is still lpso structure phase after homogenization treatment, and the content of lpso structure phase increases with the increase of Zn content.<br>