研究了喷射沉积ＳｉＣｐ／ＬＹ１２复合材料的室温及高温拉伸性能。体积分数为１５％的复合材料经热挤压和热处理后，室温弹性模量、抗拉强度和屈服强度均有提高，但延伸率下降，高温抗拉强度和弹性模量则显著提高。分析了复合材料室温拉伸性能实验值与理论值的差异，讨论了孔隙率和颗粒分布对拉伸性能的影响。 The tensile properties of spray-deposited SiCp / LY12 composites at room temperature and high temperature were studied. After hot extrusion and heat treatment, the room temperature elastic modulus, tensile strength and yield strength all increased, but the elongation decreased, the high temperature tensile strength and elastic modulus increased significantly. The difference between the experimental and theoretical values ​​of the tensile properties of the composites at room temperature was analyzed. The effects of porosity and particle size distribution on the tensile properties were discussed.