The role of deviatoric stress and dislocations on the α to ω phase transformation in Ti

K Dang, CN Tomé, L Capolungo - Acta Materialia, 2023 - Elsevier
Under extreme conditions, α-Ti becomes unstable and transforms either into β-Ti at high
temperature or into ω-Ti at high pressure. In what concerns the α to ω phase transformation …

Transformation-induced plasticity in omega titanium

AH Zahiri, J Ombogo, T Ma, P Chakraborty… - Journal of Applied …, 2021 - pubs.aip.org
ω-titanium (Ti) is a high-pressure phase that is conventionally perceived to be brittle and
nondeformable, although direct investigations of its deformation process remain scarce. In …

Influence of phase transformation kinetics on the formation of α in a β-quenched Ti–5Al–5Mo–5V–3Cr–1Zr alloy

P Barriobero-Vila, G Requena, S Schwarz… - Acta Materialia, 2015 - Elsevier
The effect of phase transformation kinetics on the formation of α in the β-quenched Ti–5Al–
5Mo–5V–3Cr–1Zr metastable β titanium alloy is investigated as a function of heating rate by …

Integrated computational materials engineering (ICME) approach to design of novel microstructures for Ti-alloys

D Wang, R Shi, Y Zheng, R Banerjee, HL Fraser… - Jom, 2014 - Springer
In this overview, we present integrated CAPHAD and phase-field modeling with critical
experiments to explore a newly discovered, nonconventional, solid–solid phase …

[HTML][HTML] First-principles study of the α-ω phase transformation in Ti and Zr coupled to slip modes

A Kumar, CA Bronkhorst, T Lookman - Journal of Applied Physics, 2018 - pubs.aip.org
We present first-principles density functional theory calculations to study the α-ω phase
transformation in Ti and Zr and its coupling to slip modes of the two phases. We first …

Strain-induced variant selection in heterogeneous nucleation of -Ti at screw dislocations in -Ti

M Poschmann, J Lin, H Geerlings, IS Winter… - Physical Review …, 2018 - APS
Heterogeneous nucleation of the α to β phase transition at〈 1 1 1〉 β-type screw
dislocations in pure titanium is examined through a combination of elasticity theory and …

Stability of and phases in Ti at high pressures

KD Joshi, G Jyoti, SC Gupta, SK Sikka - Physical Review B, 2002 - APS
Abstract Recently, Vohra and Spencer [Phys. Rev. Lett. 86, 3068 (2001)] reported that
titanium metal undergoes a transition from a hexagonal phase (ω) to an orthorhombic phase …

Stress-induced phase transformation and phase boundary sliding in Ti: An atomically resolved in-situ analysis

Z Kou, X Li, R Huang, L Yang, Y Yang, T Feng… - Journal of Materials …, 2023 - Elsevier
In-situ tensile experiments on pure Ti were performed in a transmission electron microscope
at room temperature. The dynamic process of stress-induced hexagonal closed-packed …

ω phase acts as a switch between dislocation channeling and joint twinning-and transformation-induced plasticity in a metastable β titanium alloy

MJ Lai, T Li, D Raabe - Acta Materialia, 2018 - Elsevier
We have investigated the twinning-induced plasticity (TWIP) and transformation-induced
plasticity (TRIP) as well as the influence of ω phase on these two phenomena in a …

β to ω phase transformation due to aging in a Ti–Mo alloy deformed in impact compression

E Sukedai, D Yoshimitsu, H Matsumoto… - Materials Science and …, 2003 - Elsevier
We investigated the roles of vacancies and their clusters introduced in a Ti–20mass% Mo
alloy by high-speed compression in the formation of aged ω-phase crystals. Specimens …