A novel light-weight refractory high-entropy alloy with high specific strength and intrinsic deformability

X. W. Liu, Z. C. Bai, X. F. Ding, J. Q. Yao, L. Wang, Y. Q. Su*, Z. T. Fan, J. J. Guo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

AlNb2TiV, a novel, light-weight, refractory high-entropy alloy (RHEA), with high specific strength and excellent room-temperature deformability is identified. As cast, it has a dendritic microstructure with an ordered B2 phase, low density (~6.19 g/cm3), excellent specific yield strength (167 MPa*cm3/g) and deformability (strain >1.0 in compression). Slip occurs by glide of 1/2〈1 1 1〉 dislocations. Based on previous work, the Ti/Nb ratio of our RHEA falls in the optimal range for easy dislocation motion and good deformability.

Original languageEnglish
Article number129255
JournalMaterials Letters
Volume287
DOIs
Publication statusPublished - 15 Mar 2021
Externally publishedYes

Keywords

  • Deformability
  • Microstructure
  • Refractory high-entropy alloy
  • Solidification
  • Specific strength

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