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本文对新型颗粒弥散铝基纳米晶薄带的微观结构、相转变和力学性能作了详细研究.结果表明，随着混合稀土（Mm）含量的增加，快凝al-Fe－V－Si合金α-al晶粒和弥散颗粒不断细化，形成颗粒弥散铝基纳米晶材料.稀土元素在快凝过程中促使亚稳相al8Fe4Mm的形成，抑制α－al13（Fe，V）3Si相的析出.含0.5％和1.0％Mm（原子分数）纳米合金在673K附近al8Fe4Mm转变为α－al13（Fe,V）3Si相.含1％Mm快凝合金形成很细的颗粒弥散纳米晶材料,其断裂强度和疲劳强度比微晶al-Fe－V－Si合金高出1倍，且具有更好的热稳定性.
In this paper, the microstructure, phase transformation and mechanical properties of the novel particle-dispersed aluminum-based nanocrystalline ribbons have been studied in detail.The results show that with the increase of mixed rare earth (Mm) content, the fast-setting al-Fe-V-Si alloy α -al grains and dispersed particles continue to refine, forming particles dispersed aluminum-based nanocrystalline materials.Rare earth elements in the fast-solidification process to promote the formation of metastable phase al8Fe4Mm, inhibit α-al13 (Fe, V) 3Si phase precipitation. 0.5% and 1.0% Mm (atomic fraction) nanocrystalline alloys transformed into α-al13 (Fe, V) 3Si phase near 673 K. The fracture toughness and Fatigue strength than the microcrystalline al-Fe-V-Si alloy 1 times higher, and has better thermal stability.