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Microstructural evolution and mechanical properties of a novel biomedical Ti-6Zr-4Fe alloy during solution and aging treatment

  • Peng Qi
  • , Bolong Li
  • , Wu Wei
  • , Jimin Chen
  • , Tongbo Wang
  • , Hui Huang
  • , Kunyuan Gao
  • , Shengping Wen
  • , Xiaolan Wu
  • , Li Rong
  • , Xiangyuan Xiong
  • , Wenjun Wu
  • , Lian Zhou
  • , Zuoren Nie
  • Beijing University of Technology
  • Ltd.
  • Northwest Institute for Nonferrous Metal Research

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Microstructural evolution and its effect on microhardness and Young's modulus of Ti-6Zr-4Fe alloy solution and aging treated at different temperatures were studied. The α phase transformed into β phase completely at 860 °C, meanwhile, the athermal ω phase was found at 860 °C and it resulted in a higher Young's modulus. The ω phase content increased from 250 °C to 400 °C, and the content decreased with further increase of aging temperature, there were only α phase and β phase at 600 °C. The phase transformation sequence was β → ω + β → ω + α + β → α + β during aging treatment. The microhardness increased from 315 HV to 492 HV due to the element solution strengthening and phase transformation strengthening. The peak microhardness of Ti-6Zr-4Fe alloy aged at 400 °C reached 652 HV. The formation of ω phase resulted in the increase of microhardness and Young's modulus in Ti-6Zr-4Fe alloy.

Original languageEnglish
Pages (from-to)429-437
Number of pages9
JournalJournal of Materials Research and Technology
Volume21
DOIs
StatePublished - Nov 2022
Externally publishedYes

Keywords

  • Aging treatment
  • Mechanical properties
  • Microstructure
  • Solution treatment
  • Ti-6Zr-4Fe alloy

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