采用熔体直接反应法,以工业钛剂和A356合金为反应物,利用高能超声原位合成了Al3Ti/A356复合材料.利用X射线衍射与扫描电镜对该复合材料的微观组织和物相组成进行分析,并通过拉伸实验对该复合材料的力学性能进行测试.结果表明,经过高能超声处理后,复合材料中的Al3Ti颗粒尺寸较高能超声处理前明显变小,分布也更均匀.当超声功率为1.2kW/cm2,超声作用时间为360s时,颗粒尺寸最小,为0.5～2μm.复合材料的抗拉强度、屈服强度和伸长率分别达到281.83、226.72MPa和5.6％,较未施加高能超声的复合材料分别提高了16.2％、10.3％和33.3％.
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