在电磁搅拌条件下,通过Al-Zr(CO3)2熔体原位反应法,合成了Al2O3、Al3Zr颗粒增强铝基复合材料,对材料的组织和性能进行了研究.结果表明:由于电磁搅拌能促进铝热反应固液两相的传质和扩散,改善了原位合成动力学条件,采用电磁搅拌合成的复合材料中增强相颗粒在基体中的体积分数和弥散度都较未施加电磁搅拌时有了明显提高,浇注缺陷明显减少,铝基体得到净化;当Zr(CO3)2加入量为20%时,所获复合材料抗拉强度达202.6 MPa,较未施加电磁搅拌的强度提高了34.8%.
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