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使用粉末冶金工艺制备了不同体积分数稀土氧化镧颗粒掺杂的钼合金。观察了该合金的显微组织并测试了其力学性能。结果表明,稀土氧化镧掺杂钼合金由于其细小的氧化镧颗粒和细小的晶粒的作用而具有较高的屈服强度。对稀土氧化镧掺杂钼合金强化机制的分析结果表明,钼合金的屈服强度主要来源于三个部分：变形前基体强度、细小稀土氧化镧颗粒贡献的强度和细小钼合金晶粒贡献的强度,并给出了稀土氧化镧掺杂钼合金屈服强度与稀土氧化镧颗粒尺寸、体积分数以及晶粒尺寸之间的定量解析关系。
Powder metallurgy was used to prepare molybdenum alloy doped with rare earth lanthanum oxide particles with different volume fraction. The microstructure of the alloy was observed and its mechanical properties were tested. The results show that rare earth lanthanum oxide doped molybdenum alloy has higher yield strength due to its small lanthanum oxide particles and fine grains. The results show that the yield strength of molybdenum alloy mainly comes from three parts: the matrix strength before the deformation, the contribution strength of the small rare earth lanthanum oxide particles and the contribution of the grain size of the fine molybdenum alloy, The relationship between the yield strength of rare earth lanthanum oxide doped molybdenum alloy and the particle size, volume fraction and grain size of rare earth lanthanum oxide is given.