Thermal stability of deformation twins in cryogenic rolled CP-Ti

Cai Chen*, Dongsheng Han, Yutao Song, Mingchuan Wang, Yusheng Li, Shun Xu

*Corresponding author for this work

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Abstract

In this work, abundant types of deformation twins were introduced in CP-Ti by cryogenic rolling. The stability of the twins under the annealing process and their contribution to texture were investigated. The EBSD results revealed that {112¯2} compression twins as the primary twin result in the texture with c-axis near ND and RD, while {101¯2}and {112¯1} tension twins as the primary twin induce the texture with c-axis nearly parallel to TD. Besides, the asymmetric texture intensity of the as-received sheet will be improved by the reorientation induced by deformation twins during the annealing process. Most twins show good thermal stability during the annealing process at 550 °C, however, all twins rapidly disappeared at 650 °C. The {101¯2} twins are the most thermally stable during annealing treatment at 600 °C. After full recrystallization, the texture induced by matrix reorientation maintains, while the texture associated with primary twins recovers.

Original languageEnglish
Article number112587
JournalMaterials Characterization
Volume196
DOIs
Publication statusPublished - Feb 2023

Keywords

  • Cryogenic rolling
  • Crystallographic texture
  • Deformation twin
  • Thermal stability of twin
  • Titanium
  • Twin boundary interaction

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Chen, C., Han, D., Song, Y., Wang, M., Li, Y., & Xu, S. (2023). Thermal stability of deformation twins in cryogenic rolled CP-Ti. Materials Characterization, 196, Article 112587. https://doi.org/10.1016/j.matchar.2022.112587