Ti-45Al-5Nb alloy powders were used as the matrix,and added different contents of Y2O3.The TiAl-based alloys with excellent mechanical properties were prepared by vacuum hot pressing sintering technology.Analysed the effect about Y2O3 on the properties of the alloys.The results show that trace amounts of Y2O3 can effectively improve the physical and mechanical properties and refine the grain size of the alloys.When 0.25% Y2O3,the TiAl alloy exhibits excellent hardness,density,flexural strength and fracture toughness.TiAl-based alloys are mainly composed of brittle fracture.
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机译：使用Ti-45Al-5NB合金粉末作为基质，并添加了y2O3的不同含量。通过真空热压烧结技术制备具有优异机械性能的TiAl基合金.AnaSysed对Y2O3对合金性质的影响。结果表明，痕量的Y2O3可以有效地改善物理和机械性能并优化合金的晶粒尺寸。当0.25％Y 2 O 3时，Tial合金表现出优异的硬度，密度，弯曲强度和断裂韧性。基合金是基础的合金主要由脆性骨折组成。
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