A role of atomic size misfit in lattice distortion and solid solution strengthening of TiNbHfTaZr high entropy alloy system

Research output: Contribution to journal › Research article › Contributed › peer-review

Contributors

  • Pramote Thirathipviwat - , Chair of Metallic Materials and Metal Physics, Ibaraki University, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Shigeo Sato - , Ibaraki University (Author)
  • Gian Song - , Kongju National University (Author)
  • Jozef Bednarcik - , P. J. Safarik University, German Electron Synchrotron (DESY) (Author)
  • Kornelius Nielsch - , Chair of Metallic Materials and Metal Physics, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Juree Jung - , Inha University, Korea Institute of Industrial Technology (Author)
  • Junhee Han - , Leibniz Institute for Solid State and Materials Research Dresden, Korea Institute of Industrial Technology (Author)

Abstract

Systematic variations of chemical compositions in TiNbHfTaZr HEA system were designed for an investigation of compositional complexity and chemical composition effects on lattice distortion. The lattice distortion was quantitatively analyzed by using the pair distribution function (PDF) method. The levels of lattice distortion were proportional to the atomic size misfit rather than the compositional complexity in the TiNbHfTaZr HEA system. The more pronounced lattice distortion in the TiNbHfTaZr HEA system increases the solid solution strengthening. The study suggested that the atomic size misfit is one of the foremost considerations on lattice distortion and solid solution strengthening in the TiNbHfTaZr HEA system.

Details

Original languageEnglish
Article number114470
JournalScripta materialia
Volume210
Publication statusPublished - 15 Mar 2022
Peer-reviewedYes

Keywords

ASJC Scopus subject areas

Keywords

  • High entropy alloys, Lattice distortion, Pair distribution function, Solid solution strengthening