中文摘要：

铝矩阵 composites 增强了由在 situ ， Al2O3 和 Al3Zr 粒子从 A356-Zr ( CO3 )被制作经由 magnetochemistry 反应的 2 系统，和形态学，尺寸和分布在里面 situ 粒子以及微观结构， composites 的机械机制被 XRD 调查， SEM ， TEM 并且在 situ 张力的测试。结果与搏动的磁场帮助显示那，形态学在里面 situ 粒子主要与球形状，尺寸在纳米规模，在矩阵的分布是一致的。接口在之间在里面 situ 粒子和铝矩阵是网络，没有界面的长出被观察。这些由于应用磁场在铝导致的强壮的颤动融化，它接着，加速 melt 反应。上述贡献上的磁场的效果详细被讨论。

英文摘要：

Aluminum matrix composites reinforced by in situ Al2O3 and Al3Zr particles are fabricated from A356-Zr（CO3）2 system via magnetochemistry reaction, and the morphologies, sizes and distributions of the in situ particles as well as the microstructures, mechanical mechanisms of the composites are investigated by XRD, SEM, TEM and in situ tensile tests. The results indicate that with the pulsed magnetic field assistance, the morphologies of the in situ particles are mainly with ball-shape, the sizes are in nanometer scale and the distributions in the matrix are uniform. The interfaces between the in situ particles and the aluminum matrix are net and no interfacial outgrowth is observed. These are due to the strong vibration induced by the applied magnetic field in the aluminum melt, which in turn, accelerates the melt reactions. The effects of the magnetic field on the above contributions are discussed in detail.