采用传统的氢气烧结粉末冶金法制备钼镧合金，按质量百分比在钼粉中加入1 % La₂O₃后，经混料机混合均匀，进行2ｔ等静压压制，保压2 min，再进行1800 ℃氢气烧结，观察其金相组织。将坯料置于1450 ℃炉中保温15 min后进行锻造，随后逐步降温以控制晶粒长大。将锻造钼棒沿轴向切开，经磨削、抛光、腐蚀（腐蚀液组分为2.3 g NaOH + 2.6 g K₃[Fe(CN)₆] + 20 mL H₂O），在Leica DM2500p光学显微镜低倍镜下观察。将试样放在Tescan Mira3高功率场发射扫描电镜下观察并使用Oxford Onemax20能谱仪进行成分分析。最后为了探究钼合金温度场分布对金属流动的影响规律并进行直观的可视化分析，采用Deform软件进行有限元分析，主要流程包括本构方程的建立、有限元模型的建立和工艺流程的确立。

The molybdenum-lanthanum alloy was prepared by the conventional hydrogen sintering powder metallurgy method. After adding 1 % La2O3 to the molybdenum powder according to the mass percentage, the alloy was mixed well by a blender, isostatically pressed at 2 T, held for 2 min, and then hydrogen sintered at 1800 ℃ to observe its metallographic organization. The billet is placed in a furnace at 1450 ℃ for 15 min and then forged, followed by a gradual temperature reduction to control grain growth. The forged molybdenum rods were cut along the axial direction, ground, polished and etched （腐蚀液组分为2.3 g NaOH + 2.6 g K₃[Fe(CN)₆] + 20 mL H₂O）, and observed under a Leica DM2500p optical microscope at low magnification. The specimens were observed under a Tescan Mira3 high-power field emission scanning electron microscope and analyzed for composition using an Oxford Onemax20 energy spectrometer. Finally, in order to investigate the influence of the temperature field distribution of the molybdenum alloy on the metal flow and to visualize the analysis, a finite element analysis was performed using Deform software. The main processes included the establishment of the intrinsic constitutive equations, the establishment of the finite element model and the establishment of the process flow