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利用多功能雾化沉积装置制备了Ｎｉ－Ａｌ－Ｍｏ 系Ｎｉ３Ａｌ基高温合金。拉伸性能测试表明，喷射沉积Ｎｉ３Ａｌ－Ｍｏ 合金的屈服强度具有明显的“Ｒ”特性。利用ＴＥＭ 位错结构分析，阐明了合金微观结构与屈服强度之间的关系，研究结果表明，试验合金所具有的屈服强度随温度的变化规律主要是由不同温度下γ′及γ相内的位错缠结状况、位错对的形态及数量和六面体滑移系的开动程度决定的。
Ni-Al-Mo based Ni3Al-based superalloy was prepared by multifunctional atomization deposition equipment. Tensile properties tests showed that the yield strength of spray-deposited Ni3Al-Mo alloy has obvious “R” characteristics. The relationship between the microstructure and yield strength of the alloy was clarified by TEM dislocation structure analysis. The results show that the variation of yield strength with temperature of the alloy is mainly caused by the difference of γ ’ Fault entanglement, dislocation pairs form and number of hexahedral sliding system and the degree of the start of the decision.