Carbon nanotubes (CNTs) reinforced Al composites with a unique intragranular dispersion were obtained by using ultra-short CNTs. Nano-scaled CNTs were uniformly distributed inside the ultrafine Al grains. In comparison with typical CNT/Al composites with intergranular CNTs dispersion, this intragranular CNT/Al composites enable stronger dislocation pinning and retention, thereby exhibits simultaneous improvement in strength and ductility. The present intragranular dispersion strategy will provide inspirations for fabricating strong and ductile nanocarbon reinforced metal matrix composites.

中文翻译：

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碳纳米管在铝基复合材料中的颗粒内分散增强

通过使用超短碳纳米管，获得了具有独特的颗粒内分散性的碳纳米管（CNTs）增强的Al复合材料。纳米碳纳米管均匀地分布在超细铝晶粒内。与具有晶间CNT分散体的典型CNT / Al复合材料相比，这种颗粒内CNT / Al复合材料能够实现更强的位错钉扎和固位，从而同时提高强度和延展性。当前的颗粒内分散策略将为制造结实而易延展的纳米碳增强金属基复合材料提供灵感。