Elsevier

Scripta Materialia

Volume 189, December 2020, Pages 140-144
Scripta Materialia

Stiff, strong and ductile heterostructured aluminum composites reinforced with oriented nanoplatelets

https://doi.org/10.1016/j.scriptamat.2020.08.017Get rights and content

Abstract

In this study, we report a liquid-solid reaction method combined with preferential particle orientation for fabricating a heterostructured Al3BC/6061 composite with ultrahigh Young's modulus (105 GPa), high tensile strength (495 MPa) and reasonable ductility (6.2%). The preferential orientation of Al3BC nanoplatelets contributes to the ultrahigh stiffness, and heterogeneous grain structure of the Al matrix facilitates the development of hetero-deformation induced stress and extra strain hardening, giving rise to high strength and good ductility. These results shed new sights into the untapped potential in improving the mechanical properties of metal matrix composites.

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Declaration of Competing Interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Acknowledgements

This work is supported by the National Key R and D Program of China (No. 2017YFA0204403), Key Program of National Natural Science Foundation of China (Nos. 51731007 and 51931003), the National Natural Science Foundation of China (Nos. 51971112 and 51501092), the Fundamental Research Funds for the Central Universities (Nos. 30920021160 and 30919011405). The authors also want to acknowledge the support of the Jiangsu Key Laboratory of Advanced Micro-Nano Materials and Technology. SEM, TEM and

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