利用Ti-Al-TiO2-Fe2O3体系的放热反应,原位热压合成了Fe掺杂的Al2O3/TiAl复合材料.借助XRD和SEM研究了复合材料的物相组成和显微结构以及Fe2O3引入量对复合材料结构和力学性能的影响.结果表明:产物主要由γ-TiAl,α2-Ti3Al,Al2O3相构成,Al2O3颗粒分布于基体交界处,存在一定的团聚;随Fe2O3的掺杂量增大,Al2O3颗粒呈细小弥散分布,同时基体晶粒尺寸也减小,较好地改善了材料的力学性能,复合材料的相对密度和洛氏硬度逐渐增大.Fe2O3掺杂量为0.84% (质量分数)时,复合材料弯曲强度和断裂韧度达到最大值,分别为624MPa和6.63 MPa·m1/2.
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