Effect of β recovery treatment prior to aging on the (α+β) microstructure and mechanical properties of Ti-15V-3Cr-3Sn-3Al

Tadashi Furuhara, T. Nagaoka, T. Maki

Research output: Contribution to conferencePaperpeer-review

Abstract

Microstructures developed during various thermomechanical processing and their effects on the tensile properties were studied in a Ti-15V-3Cr-3Sn-3Al alloy. Cold rolling and aging after the solution treatment results in the localized precipitation of α phase on the dislocations in planar slip bands introduced in the β matrix by rolling. The crystallographic variants of α precipitate are strongly restricted by the nature of dislocations. Controlled short time annealing above the β transus after cold rolling produces the fully recovered β matrix structure with fine subgrain sizes smaller than 1 μm. By subsequent aging of the recovered specimens, α precipitates form preferentially on β subgrain boundaries. α precipitation within β subgrains also occurs. More numbers of α variants than those in the cold rolled and aged specimens are observed locally. β recovery treatment prior to aging clearly improves the strength-ductility balance, as previously reported by Ouchi et al., mostly by the increase of local elongation.

Original languageEnglish
Pages45-52
Number of pages8
Publication statusPublished - 1998 Jan 1
Externally publishedYes
EventProceedings of the 1998 TMS Annual Meeting - San Antonio, TX, USA
Duration: 1998 Feb 161998 Feb 19

Other

OtherProceedings of the 1998 TMS Annual Meeting
CitySan Antonio, TX, USA
Period98/2/1698/2/19

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Fingerprint Dive into the research topics of 'Effect of β recovery treatment prior to aging on the (α+β) microstructure and mechanical properties of Ti-15V-3Cr-3Sn-3Al'. Together they form a unique fingerprint.

Cite this