采用液相原位反应法制备了Cu-0.9Y2O3(体积分数,％)复合材料.TEM观察与SAD分析表明:Cu基体上均匀分布着纳米Y2O3颗粒,其平均尺寸和颗粒间距分别为5.0和20 nm,Y2O3颗粒与基体共格,晶面(422)Y2O3∥(111)Cu,晶带轴[011]Y2O3∥[112]cu.实验结果表明,Cu-0.9Y2O3复合材料的抗拉强度为568 MPa,其强化机制为Orowan机制和切割机制共同作用,其中Orowan机制产生的强度增值为185 MPa,切割机制引起强度增加195 MPa.
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