摘要
Metals have been mankind’s most essential materials for thousands of years.In recent years,however,innovation-driven development of major national security strategy and core areas of the national economy is highly impeded by a shortage of advanced higher-strength-toughness metals.One of the main reasons is that metals inherently exhibit the inverted-relationship of strength-toughness.The emergence of two types of disordered metals:amorphous alloys and high entropy alloys,provides a fully-fresh strategy for strength-toughening by tailoring the topological and/or chemical disorder.In this paper,we first briefly review the history of strength-toughening of metals,and summarize the development route-map.We then introduce amorphous alloys and high entropy alloys,as well as some case studies in tailoring disorder to successfully achieve coexisting high strength and high ductility/toughness.Relevant challenges that await further research are summarized in concluding remarks.
基金
This work was supported by the National Outstanding Youth Science Fund Project of National Natural Science Foundation of China(NSFC)(No.12125206)
the NSFC Basic Science Center for“Multiscale Problems in Nonlinear Mechanics”(No.11988102)
the NSFC(Nos.11972345 and 11790292).
