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Effect of reverse β-to-ω transformation on twinning and martensitic transformation in a metastable β titanium alloy

  • Beijing Institute of Technology
  • Northwest Institute of Nuclear Technology
  • General Research Institute for Non-ferrous Metals China
  • Kyungnam University

科研成果: 期刊稿件文章同行评审

摘要

A metastable β titanium alloy, Ti–2Al-9.2Mo–2Fe (wt.%), with athermal ω phase after quenching has been subjected to high strain rate (∼3000 s−1)compression at ambient temperature by Spilt Hopkinson Pressure Bar arrangement. Reverse β-to-ω transformation was investigated by transmission electron microscopy during deformation. Furthermore, the novel distribution of athermal ω phase in {332} twinning and stress-induced martensitic was observed. We reveal that such novel distribution is attributed to the influence of ω phase on {332} twinning and stress-induced martensite transformation (SIMT)based on the viewpoint of the instability of the lattice structure of metastable β phase. Furthermore, a new process of twinning and SIMT in current alloy with ω phase was proposed.

源语言英语
页(从-至)680-687
页数8
期刊Materials Science and Engineering: A
759
DOI
出版状态已出版 - 24 6月 2019

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