以Al粉和Cu粉为原料,采用机械合金化(MA)和放电等离子烧结(SPS)工艺,原位合成了致密的Al2Cu/Al块体复合材料,着重研究了MA过程中粉末的形貌、尺寸和物相结构的变化以及SPS后复合材料的微观组织和力学性能.结果表明:在MA过程中,随着MA时间延长,部分Cu原子逐渐固溶于Al原子晶格中,形成均匀过饱和的固溶体Al(Cu);在SPS过程中,Cu从过饱和固溶体中析出并与Al反应形成Al2Cu颗粒,且弥散分布于Al基体中,形成Al2Cu/Al复合材料;Al2Cu/Al复合材料的致密度高达98.7％,室温下的压缩断裂强度为611.3 MPa,延伸率为9.6％,具有良好的力学性能.
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