Multicomponent intermetallic nanoparticles and superb mechanical behaviors of complex alloys

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

24 Scopus Citations
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Author(s)

  • Y. Tong
  • Z. B. Jiao
  • J. Wei
  • J. X. Cai
  • X. D. Han
  • K. Lu
  • Y. Liu
  • C. T. Liu

Detail(s)

Original languageEnglish
Pages (from-to)933-937
Journal / PublicationScience (New York, N.Y.)
Volume362
Issue number6417
Publication statusPublished - 23 Nov 2018

Abstract

Alloy design based on single-principal-element systems has approached its limit for performance enhancements. A substantial increase in strength up to gigapascal levels typically causes the premature failure of materials with reduced ductility. Here, we report a strategy to break this trade-off by controllably introducing high-density ductile multicomponent intermetallic nanoparticles (MCINPs) in complex alloy systems. Distinct from the intermetallic-induced embrittlement under conventional wisdom, such MCINP-strengthened alloys exhibit superior strengths of 1.5 gigapascals and ductility as high as 50% in tension at ambient temperature. The plastic instability, a major concern for high-strength materials, can be completely eliminated by generating a distinctive multistage work-hardening behavior, resulting from pronounced dislocation activities and deformation-induced microbands. This MCINP strategy offers a paradigm to develop next-generation materials for structural applications.

Citation Format(s)

Multicomponent intermetallic nanoparticles and superb mechanical behaviors of complex alloys. / Yang, T.; Zhao, Y. L.; Tong, Y.; Jiao, Z. B.; Wei, J.; Cai, J. X.; Han, X. D.; Chen, D.; Hu, A.; Kai, J. J.; Lu, K.; Liu, Y.; Liu, C. T.

In: Science (New York, N.Y.), Vol. 362, No. 6417, 23.11.2018, p. 933-937.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review