Effect of pre-annealing deformation on the recrystallized texture and grain boundary misorientation in commercial pure titanium

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2017.11.059· OSTI ID:22804879

Wang, Ying ^[1]; He, Weijun; Liu, Na; Chapuis, Adrien; Luan, Baifeng; Liu, Qing ^[1]

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1. College of Materials Science and Engineering, Chongqing University, Chongqing 400044 (China)

Highlights: • Tailoring the misorientation angle distribution by pre-annealing rolling in CP-Titanium. • Enhancing the inheritance of basal scatter texture by medium pre-annealing rolling. • Moderate pre-annealing rolling produces refined recrystallized grains. - Abstract: The effects of rolling reduction followed by annealing (at 650 °C) on commercial pure titanium sheet are investigated. The microstructure, texture and misorientation angle distributions after rolling and annealing are observed by electron back scatter diffraction (EBSD). It is found that, when the rolling deformation was low (20%) or medium (40%), a fraction of non-TD-split basal texture is inherited from the deformed state and remains even after long time (60 min) annealing. However, heavy rolling deformation (85%) causes a strong and typical TD-split basal texture in the deformed and annealed states. In addition, the misorentation angle distributions are relatively homogeneous for the recrystallized samples with a low or medium pre-annealing deformation. But with heavy pre-annealing deformation, the misorientation angle distributions exhibits two peaks, around 15–30° and 70–80°. The texture and misorientation angle evolution mechanisms are discussed in this work. The study shows the possibility to tailor the texture and the misorientation angle distribution of commercial pure titanium sheet by ordinary rolling process.

• OSTI ID: 22804879
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 136; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
BACKSCATTERING
DEFORMATION
DISTRIBUTION
ELECTRON DIFFRACTION
GRAIN BOUNDARIES
RECRYSTALLIZATION
ROLLING
TITANIUM