（Institute of Metal Research, Chinese Academy of Sciences,
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DOI:
10.7502/j.issn.1674-3962.2016.09.04
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Abstract:
Metal matrix composites are developed toward higher strength, good ductility or toughness and high performance in order to meet demand of a wide application. For this purpose, attempts have been focused on multi scale strengthening, nano carbon reinforcing and architecture design. A review on the present research indicates that the synergetic strengthening of ultrafine grains and reinforcing particles could provide high strength and good toughness. Based on that, addition of dual-scaled reinforcements is effective for improvement of comprehensive properties such as the elastic modulus. The nano carbon reinforcements are highly effective and multiple for strengthening metals due to their ultrahigh mechanical and physical properties. As to the hierarchical architecture, it is highly feasible for effectively strengthening metals without sacrificing ductility and toughness. Challenges for these studies are addressed. In the future, modelling and simulation for architecture and interface between nano carbons and metals should be conducted. Furthermore, novel fabrication methods for mass production should be developed. Research of metal matrix composites has entered a new era, and it is one of important branches of novel materials.