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探讨了不同Ｍｎ含量对Ｆｅ３Ａｌ金属间化合物在２５～８００℃下拉伸性能的影响；并就Ｍｎ对Ｆｅ３Ａｌ合金化后的组织变化以及其对拉伸性能与断裂特征的影响进行了分析，结果表明，由于Ｍｎ对Ｆｅ３Ａｌ的合金化，而引入的具有面心立方有序结构的近Ｌ１２γ相，对Ｆｅ３Ａｌ的组织结构及拉伸性能产生了很大影响；随着Ｍｎ含量的增加，合金中ＤＯ３相的有序度降低；当Ｍｎ加入量适当时，可显著提高Ｆｅ３Ａｌ的室温强度和塑性，及合金的中高温塑性，但中高温强度衰减较大；总的说来，１０％Ｍｎ合金其塑性显著提高，室温强度大幅度提高，中高温强度与Ｆｅ３Ａｌ相当．
The effects of Mn content on the tensile properties of Fe3Al intermetallics at 25-800 ℃ were investigated. The effects of Mn on the microstructure and the tensile properties and fracture characteristics of Fe3Al alloy were also analyzed. The results show that , The near-L12γ phase with face-centered cubic structure induced by the alloying of Mn to Fe3Al has a great influence on the microstructure and tensile properties of Fe3Al. With the increase of Mn content, the DO3 phase The degree of order decreases; when the addition of Mn is appropriate, the room temperature strength and ductility of Fe3Al and the ductility of the alloy at mid-high temperature are significantly increased, Increase, room temperature strength increased significantly, high temperature strength and Fe3Al quite.