Additively manufactured CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy with enhanced strength-plasticity synergy

S. Guan, D. Wan, K. Solberg, F. Berto, T. Welo, T. M. Yue, K. C. Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

In this study, we additively manufactured a CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy (HEA), with alternating layers of both constituent materials, that exhibits enhanced strength-plasticity synergy during compression (yield strength up to 990 MPa and no complete fracture until 80% strain), surpassing those of monolithic bulk HEAs. The enhanced strength-plasticity synergy originates from heterogenous microstructures of ultra-hard body-centered-cubic equiaxed grains and soft face-centered-cubic columnar grains periodically arranged in the AlCoCrFeNiTi0.5 and CrMnFeCoNi lamellae, respectively. This study demonstrates a feasible and flexible way to design HEAs with heterogenous microstructures and superior mechanical properties.

Original languageEnglish
Pages (from-to)133-138
Number of pages6
JournalScripta Materialia
Volume183
DOIs
Publication statusPublished - 1 Jul 2020

Keywords

  • Additive manufacturing
  • Heterogenous microstructure
  • Laminated high-entropy alloy
  • Strength-plasticity synergy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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