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铸态复相Al67Mn8Ti24Nb1合金经10h高能球磨转变为弱有序的fcc结构，该正稳态粉末在热压成形过程中发生重有序化转变，恢复至复相结构．成形合金显微组织由Ll2基体和弥散分布的DO22结构Al3（Ti，Nb）第二相组成，第二相主要沿基体颗粒周围分布，一部分分布于基体内部，与铸态组织相比，成形合金晶粒明显细化,热压合金具有高的压缩强度，从室温至500℃基本稳定，高于500℃强度虽明显下降，但800℃时其屈服强度仍有531MPa，约为室温时的60％；成形合金室温压缩塑性为16．8％，退火后达20％，塑性随变形温度升高而提高，700℃以上试样受压时不断变形压扁，不发生开裂
The as-cast multiphase Al67Mn8Ti24Nb1 alloy transformed into a weak ordered fcc structure by high-energy ball milling for 10h, and the metastable powder was reordered and reformed to the complex phase structure during hot press forming. The microstructure of the formed alloy is composed of the Ll2 matrix and the dispersed DO2 structure Al3 (Ti, Nb) second phase. The second phase is mainly distributed around the matrix particles and partly distributed in the matrix. Compared with the as-cast microstructure, the formed alloy The crystal grains are obviously refined. The hot pressed alloy has high compressive strength, stable from room temperature to 500 ℃. Although the strength above 500 ℃ decreased obviously, the yield strength at 800 ℃ is still 531MPa, which is about 60% ; The compressive plasticity of the alloy is 16.8% at room temperature and 20% after annealing, the plasticity increases with the increase of the deformation temperature, while the sample above 700 ° C continuously deforms and collapses under compression without cracking