Pressure-induced alpha-to-omega transition in titanium metal: A systematic study of the effects of uniaxial stress

Abstract

We investigated the effects of uniaxial stress on the pressure-induced alpha-to-omega transition in pure titanium (Ti) by means of angle dispersive x-ray diffraction in a diamond-anvil cell. Experiments under four different pressure environments reveal that: (1) the onset of the transition depends on the pressure medium used, going from 4.9 GPa (no pressure medium) to 10.5 GPa (argon pressure medium); (2) the a and w phases coexist over a rather large pressure range, which depends on the pressure medium employed; (3) the hysteresis and quenchability of the w phase is affected by differences in the sample pressure environment; and (4) a short term laser-heating of Ti lowers the alpha-to-omega transition pressure. Possible transition mechanisms are discussed in the light of the present results, which clearly demonstrated the influence of uniaxial stress in the alpha-to-omega transition.

16 pages, 6 figures, 1 table

References in corpus (2)

• A New Mechanism for the Alpha to Omega Martensitic Transformation in Pure Titanium
• Melting of tantalum at high pressure determined by angle dispersive x-ray diffraction in a double-sided laser-heated diamond-anvil cell

Cited by in corpus (48)

• Pressure effects on the structural and electronic properties of ABX4 scintillating crystals
• High-pressure structural study of the scheelite tungstates CaWO4 and SrWO4
• High-pressure stability and compressibility of APO4 (A = La, Nd, Eu, Gd, Er, and Y) orthoposphates: A synchrotron powder x-ray diffraction study
• Determination of the high-pressure crystal structure of BaWO4 and PbWO4
• High-pressure x-ray diffraction study of SrMoO4 and pressure-induced structural changes
• High-pressure x-ray diffraction and ab initio study of Ni2Mo3N, Pd2Mo3N, Pt2Mo3N, Co3Mo3N, and Fe3Mo3N: Two families of ultra-incompressible bimetallic interstitial nitrides
• Combined Raman scattering and ab initio investigation of pressure-induced structural phase transitions in the scintillator ZnWO4
• High-pressure structural investigation of several zircon-type orthovanadates
• High-pressure Raman spectroscopy and lattice-dynamics calculations on scintillating MgWO4: A comparison with isomorphic compounds
• Post-spinel transformations and equation of state in ZnGa2O4: Determination at high-pressure by in situ x-ray diffraction
• Zircon to monazite phase transition in CeVO4
• In situ high-pressure synchrotron x-ray diffraction study of CeVO4 and TbVO4 up to 50 GPa
• High-pressure structural phase transitions in CuWO4
• High-pressure phase transitions and compressibility of wolframite-type tungstates
• Tuning the band gap of PbCrO4 through high-pressure: Evidence of wide-to-narrow semiconductor transitions
• Effects of high-pressure on the structural, vibrational, and electronic properties of monazite-type PbCrO4
• High-pressure x-ray diffraction study on the structure and phase transitions of the defect-stannite ZnGa2Se4 and defect-chalcopyrite CdGa2S4
• Structural stability of Fe5Si3 and Ni2Si studied by high-pressure x-ray diffraction and ab initio total-energy calculations
• High-pressure structural behaviour of HoVO4: Combined XRD experiments and ab initio calculations
• Hall-effect and resistivity measurements in CdTe and ZnTe at high pressure: Electronic structure of impurities in the zincblende phase and the semi-metallic or metallic character of the high-pressure phases
• Structural study of alfa-Bi2O3 under pressure
• Experimental and theoretical study of structural properties and phase transitions in YAsO4 and YCrO4
• High-pressure powder x-ray diffraction study of EuVO4
• Experimental and theoretical investigations on ThGeO4 at high pressure
• Thallium under extreme compression
• Monazite-type SrCrO4 under compression
• First-principles calculations of phase transition, elasticity, and thermodynamic properties for TiZr alloy
• High-pressure high-temperature phase diagram of zinc
• High-pressure x-ray diffraction study of bulk and nanocrystalline PbMoO4
• Record high $T_{\mathrm{c}}$ and robust superconductivity in transition metal $\delta$-Ti phase at megabar pressure
• New high-pressure phase of HfTiO4 and ZrTiO4 ceramics
• New high-pressure phase and equation of state of Ce2Zr2O8
• Reinvestigation of high pressure polymorphism in Hafnium metal
• High-pressure study of substrate material ScAlMgO4
• The high-pressure behavior of CaMoO4
• Compressibility and structural stability of ultra-incompressible bimetallic interstitial carbides and nitrides
• High-pressure characterization of multifunctional CrVO4
• Titanium $\alpha -\omega$ phase transformation pathway and a predicted metastable structure
• High-Pressure Monoclinic-Monoclinic Transition in Fergusonite-type HoNbO4
• Possible superlattice formation in high-temperature treated carbonaceous MgB2 at elevated pressure
• Phase Transitions in High Purity Zr Under Dynamic Compression
• Coupled magnetic and structural phase transitions in the antiferromagnetic polar metal Pb2CoOsO6 under pressure
• Density functional theory study of the α --> ω martensitic transformation in titanium induced by hydrostatic pressure
• Effect of pressure on the electronic structure of hcp Titanium
• Superconducting and Structural Transitions in the β-Pyrochlore Oxide KOs2O6 under High Pressure
• Stress-induced phase transformations in Ti-15Mo alloy at elevated temperature
• Superconductivity and Rattling under High Pressure in the beta-Pyrochlore Oxide RbOs2O6
• High-Pressure XRD Study of Ti-3Al-2.5V Titanium Alloy: Intermediate Transition Pressure and Composition Trends in Ti-Al-V Alloys