Composites Communications ( IF 6.5 ) Pub Date : 2022-12-30 , DOI: 10.1016/j.coco.2022.101491
Rui Bao , Haichuan Luo , Liang Liu , Jianhong Yi , Jingmei Tao , Caiju Li
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Distribution states of reinforcement have considerable impact on the strength and ductility of metal composites. Herein, we reported a “nanodispersion-in-grains” strategy to simultaneously strengthen and stabilize Cu composites, which relied on a uniform dispersion of extremely fine carbonized polymer dots (CPD) inside grains. The intragranular CPD distribution not only elevated the strength of pure Cu by ∼45%, but also activated hardening mechanisms via dislocation-nanoparticle interactions. Meanwhile, 0.2 wt% CPD/Cu composite displayed good electrical conductivity of 96.5% IACS, exhibited a remarkable potential in applications as advanced multifunctional materials.
中文翻译:
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通过调整晶粒内碳化聚合物点分布同时提高铜复合材料的强度和延展性
增强体的分布状态对金属复合材料的强度和延展性有相当大的影响。在此,我们报告了一种“纳米分散在晶粒中”的策略,以同时强化和稳定 Cu 复合材料,该策略依赖于晶粒内极细碳化聚合物点 (CPD) 的均匀分散。晶粒内 CPD 分布不仅将纯 Cu 的强度提高了约 45%,而且还通过位错-纳米颗粒相互作用激活了硬化机制。同时,0.2 wt% CPD/Cu 复合材料表现出良好的 96.5% IACS 电导率,在作为先进多功能材料的应用中展现出巨大的潜力。