skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Titanium α-ω phase transformation pathway and a predicted metastable structure

Journal Article · · Physical Review B

A titanium is a highly utilized metal for structural lightweighting and its phases, transformation pathways (transition states), and structures have scientific and industrial importance. Using a proper solid-state nudged elastic band method employing two climbing images combined with density functional theory DFT + U methods for accurate energetics, we detail the pressure-induced α (ductile) to ω (brittle) transformation at the coexistence pressure. We also find two transition states along the minimal-enthalpy path and discover a metastable body-centered orthorhombic structure, with stable phonons, a lower density than the end-point phases, and decreasing stability with increasing pressure.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1235242
Alternate ID(s):
OSTI ID: 1235633
Report Number(s):
IS-J 8867; TRN: US1600739
Journal Information:
Physical Review B, Vol. 93, Issue 02; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

References (40)

The orientation relationship between the α- and ω-phases of titanium and zirconium journal September 1973
Orientation relationship between α-phase and high-pressure ω-phase of pure group IV transition metals journal March 2015
Compressibility of 22 elemental solids to 45 KB journal January 1972
Nudged-elastic band method with two climbing images: Finding transition states in complex energy landscapes journal January 2015
Erratum: Donor transition energy in GaAs superlattices in a magnetic field along the growth axis journal August 1993
Projector augmented-wave method journal December 1994
Pressure-induced transition in titanium metal a systematic study of the effects of uniaxial stress journal January 2005
Shape-Memory Transformations of NiTi: Minimum-Energy Pathways between Austenite, Martensites, and Kinetically Limited Intermediate States journal December 2014
Structural database for reducing cost in materials design and complexity of multiscale computations journal January 2006
Crystal Structures of Titanium, Zirconium, and Hafnium at High Pressures journal April 1963
An X-ray examination of the to phase in TiV, TiMo and TiCr alloys journal July 1958
Stable atomic structure of NiTi austenite journal August 2014
Novel γ -Phase of Titanium Metal at Megabar Pressures journal April 2001
First-principles calculations of defects in oxygen-deficient silica exposed to hydrogen journal September 2000
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Calibration of the DFT/GGA+U Method for Determination of Reduction Energies for Transition and Rare Earth Metal Oxides of Ti, V, Mo, and Ce journal June 2011
Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium journal May 1994
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data journal October 2011
First-principles LDA + U and GGA + U study of cerium oxides: Dependence on the effective U parameter journal January 2007
Atoms, molecules, solids, and surfaces: Applications of the generalized gradient approximation for exchange and correlation journal September 1992
PHON: A program to calculate phonons using the small displacement method journal December 2009
Shock-induced α–ω transition in titanium journal September 2001
Ab initiomolecular dynamics for liquid metals journal January 1993
Impurity effects and reaction kinetics of the pressure-induced α → ω transformation in Ti journal January 1977
Solid-Solid Transitions in Titanium and Zirconium at High Pressures journal July 1963
Phase transformations in the Ti-V system under high pressure up to 25 GPa journal March 1981
Ab initio evaluation of Coulomb and exchange parameters for DFT + U calculations journal October 2007
Crystallography and a model of the α → ω phase transformation in zirconium journal April 1981
Experimental constraints on the phase diagram of titanium metal journal October 2008
Impurities block the α to ω martensitic transformation in titanium journal January 2005
Coexistence pressure for a martensitic transformation from theory and experiment: Revisiting the bcc-hcp transition of iron under pressure journal May 2015
A generalized solid-state nudged elastic band method journal February 2012
New δ (Distorted-bcc) Titanium to 220 GPa journal December 2001
Voltage- and time-dependent valence state transition in cobalt oxide catalysts during the oxygen evolution reaction journal April 2020
Reducing Dzyaloshinskii-Moriya interaction and field-free spin-orbit torque switching in synthetic antiferromagnets journal May 2021
Electronic structure of AlFeN films exhibiting crystallographic orientation change from c- to a-axis with Fe concentrations and annealing effect journal February 2020
Lead palladium titanate: A room temperature nanoscale multiferroic thin film journal February 2020
Novel gamma-Phase of Titanium Metal at Megabar Pressures text January 2001
Nudged-elastic band method with two climbing images: finding transition states in complex energy landscapes text January 2014

Cited By (1)

Transformation pathway from alpha to omega and texture evolution in Zr via high-pressure torsion journal February 2019

Similar Records

Metastable phase transformation and hcp-ω transformation pathways in Ti and Zr under high hydrostatic pressures
Journal Article · Mon Jul 18 00:00:00 EDT 2016 · Applied Physics Letters · OSTI ID:1235242

The α–ω phase transition in shock-loaded titanium
Journal Article · Fri Jul 28 00:00:00 EDT 2017 · Journal of Applied Physics · OSTI ID:1235242

ω-Assisted α nucleation in a metastable β titanium alloy
Journal Article · Fri Jun 28 00:00:00 EDT 2019 · Scripta Materialia · OSTI ID:1235242