混杂增强镁基复合材料将两种或多种不同性质的增强相同时加入到基体中，发挥了各种增强相与基体的 优势，可得到综合性能良好的复合材料。 研究了挤压铸造及铸挤一体化成形对0.5%Tip /AZXW9100(质量分数，下同)、 0.5%TiB2p /AZXW9100 及 0.5%Tip +0.5%TiB2p /AZXW9100 镁基复合材料微观组织、力学性能的影响规律。结果表明，单独 添加0.5%Tip 或 0.5%TiB2p 均能细化复合材料的铸坯基体晶粒；联合添加0.5%Tip +0.5%TiB2p后，铸坯基体晶粒细化效果 最佳(118.25 μm 减小至 53.79μm)。添加 0.5%Tip后，复合材料的 β-Mg17 Al12相显著细化，第二相面积分数相对于基体合 金减少， 是3种材料中面积分数最低的； 添加0.5%TiB2p后，β-Mg17 Al12相尺寸增大， 第二相面积分数最大； 联合添加 0.5%Tip +0.5%TiB2p 后，β-Mg17 Al12 相相对于单独添加 0.5%TiB2p 显著细化，第二相面积分数(5.175%)含量介于单独添加 0.5%TiB2p (5.694%)和 0.5%Tip (3.642%)之间，但高于基体合金(4.433%)。 单独添加 Tip 或 TiB2p 均能减弱基体的织构强度， 联合添加0.5%Tip +0.5%TiB2p 得到了最小的基体织构强度。 添加0.5%TiB2p能够提高复合材料强度但使伸长率下降；添 加0.5%Tip 小幅提高材料强度，同时显著提高伸长率；联合添加0.5%Tip +0.5%TiB2p后，复合材料的屈服强度和抗拉强度 分别为211和318MPa，较基体分别提高13.4%和7.4%，且伸长率达到14.9%，兼具较高的强度和良好的韧性。

Hybrid reinforced magnesium matrix composites incorporate two or more reinforcement phases with different properties into the matrix, leveraging the advantages of each reinforcement phase and the matrix to achieve composites with excellent comprehensive performance. This study investigated the effects of squeeze casting and continuous squeeze casting-extrusion on the microstructure and mechanical properties of 0.5 wt.% Tip /AZXW9100, 0.5 wt.% TiB2p /AZXW9100, and 0.5 wt.% Tip +0.5 wt.% TiB2p /AZXW9100 magnesium matrix composites. The results show that the addition of either 0.5 wt.% Tip or 0.5 wt.% TiB2p alone can refine the as-cast matrix grains of the composites. The most significant grain refinement effect (from 118.25 μm to 53.79 μm) is achieved when 0.5 wt.% Tip and 0.5 wt.% TiB2p are added together. With the addition of 0.5 wt.% Tip , the β-Mg17 Al12 phase in the composite is significantly refined, and the area fraction of the second phase decreases compared with that of the matrix alloy, becoming the lowest among the three materials. In contrast, the addition of 0.5 wt.% TiB2p increases the size of the β-Mg17 Al12 phase and results in the highest second-phase area fraction. When 0.5 wt.% Tip and 0.5 wt.% TiB2p are added together, the β-Mg17 Al12 phase is significantly refined compared with the addition of 0.5 wt.% TiB2p alone, and the second-phase area fraction (5.175%) lies between that of the individual additions of 0.5 wt.% TiB2p (5.694%) and 0.5 wt.% Tip (3.642%), although it remains higher than that of the matrix alloy  (4.433%). The addition of Tip or TiB2p alone weakens the texture strength of the matrix, whereas the combined addition of 0.5 wt.% Tip +0.5 wt.% TiB2p results in the lowest matrix texture strength. The addition of 0.5 wt.% TiB2p improves the strength of the composite but reduces its elongation. In contrast, the addition of 0.5 wt.% Tip slightly increases the strength but significantly improves the elongation. When 0.5 wt.% Tip and 0.5 wt.% TiB2p are added together, the composite achieves a yield strength of 211 MPa and a tensile strength of 318 MPa, representing increases of 13.4% and 7.4%, respectively, compared with those of the matrix alloy, while maintaining an elongation of 14.9%. This demonstrates a combination of high strength and excellent toughness.