Experimental and theoretical study of Ti-6Al-4V to 220 GPa

S. G. MacLeod; B. E. Tegner; H. Cynn; W. J. Evans; J. E. Proctor; M. I. McMahon; G. J. Ackland

doi:10.1103/PhysRevB.85.224202

Experimental and theoretical study of Ti-6Al-4V to 220 GPa

S. G. MacLeod^*, B. E. Tegner, H. Cynn, W. J. Evans, J. E. Proctor, M. I. McMahon, G. J. Ackland

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

We report results from an experimental and theoretical study of the ternary alloy Ti-6Al-4V to 221 GPa. We observe a phase transition to the hexagonal. phase at approximately 30 GPa, and then a further transition to the cubic beta phase starting at 94-99 GPa. We do not observe the orthorhombic gamma and delta phases reported previously in pure Ti. Computational studies show that this sequence is possible only if there is significant local atomic ordering during the compression process, yet insufficient atomic diffusion to reach the phase-separated thermodynamic equilibrium state.

Original language	English
Article number	224202
Number of pages	7
Journal	Physical review B
Volume	85
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.85.224202
Publication status	Published - 7 Jun 2012

Keywords / Materials (for Non-textual outputs)

CRYSTAL-STRUCTURES
PHASE-TRANSITION
TITANIUM METAL
HIGH PRESSURES
ZIRCONIUM
TRANSFORMATION
TI
HAFNIUM
SYSTEM

Access to Document

10.1103/PhysRevB.85.224202

william Penney Fellowship
McMahon, M.
UK industry, commerce and public corporations
1/10/11 → 31/03/15
Project: Research
Investigation of materials under extremes of loading
McMahon, M.
UK industry, commerce and public corporations
1/06/10 → 30/09/13
Project: Research

Cite this

@article{b6e9ffa4a97e4d938a907f08f6991b50,

title = "Experimental and theoretical study of Ti-6Al-4V to 220 GPa",

abstract = "We report results from an experimental and theoretical study of the ternary alloy Ti-6Al-4V to 221 GPa. We observe a phase transition to the hexagonal. phase at approximately 30 GPa, and then a further transition to the cubic beta phase starting at 94-99 GPa. We do not observe the orthorhombic gamma and delta phases reported previously in pure Ti. Computational studies show that this sequence is possible only if there is significant local atomic ordering during the compression process, yet insufficient atomic diffusion to reach the phase-separated thermodynamic equilibrium state.",

keywords = "CRYSTAL-STRUCTURES, PHASE-TRANSITION, TITANIUM METAL, HIGH PRESSURES, ZIRCONIUM, TRANSFORMATION, TI, HAFNIUM, SYSTEM",

author = "MacLeod, {S. G.} and Tegner, {B. E.} and H. Cynn and Evans, {W. J.} and Proctor, {J. E.} and McMahon, {M. I.} and Ackland, {G. J.}",

year = "2012",

month = jun,

day = "7",

doi = "10.1103/PhysRevB.85.224202",

language = "English",

volume = "85",

journal = "Physical review B",

issn = "1098-0121",

publisher = "American Physical Society",

number = "22",

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TY - JOUR

T1 - Experimental and theoretical study of Ti-6Al-4V to 220 GPa

AU - MacLeod, S. G.

AU - Tegner, B. E.

AU - Cynn, H.

AU - Evans, W. J.

AU - Proctor, J. E.

AU - McMahon, M. I.

AU - Ackland, G. J.

PY - 2012/6/7

Y1 - 2012/6/7

N2 - We report results from an experimental and theoretical study of the ternary alloy Ti-6Al-4V to 221 GPa. We observe a phase transition to the hexagonal. phase at approximately 30 GPa, and then a further transition to the cubic beta phase starting at 94-99 GPa. We do not observe the orthorhombic gamma and delta phases reported previously in pure Ti. Computational studies show that this sequence is possible only if there is significant local atomic ordering during the compression process, yet insufficient atomic diffusion to reach the phase-separated thermodynamic equilibrium state.

AB - We report results from an experimental and theoretical study of the ternary alloy Ti-6Al-4V to 221 GPa. We observe a phase transition to the hexagonal. phase at approximately 30 GPa, and then a further transition to the cubic beta phase starting at 94-99 GPa. We do not observe the orthorhombic gamma and delta phases reported previously in pure Ti. Computational studies show that this sequence is possible only if there is significant local atomic ordering during the compression process, yet insufficient atomic diffusion to reach the phase-separated thermodynamic equilibrium state.

KW - CRYSTAL-STRUCTURES

KW - PHASE-TRANSITION

KW - TITANIUM METAL

KW - HIGH PRESSURES

KW - ZIRCONIUM

KW - TRANSFORMATION

KW - TI

KW - HAFNIUM

KW - SYSTEM

U2 - 10.1103/PhysRevB.85.224202

DO - 10.1103/PhysRevB.85.224202

M3 - Article

SN - 1098-0121

VL - 85

JO - Physical review B

JF - Physical review B

IS - 22

M1 - 224202

ER -

Experimental and theoretical study of Ti-6Al-4V to 220 GPa

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

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Projects

william Penney Fellowship

Investigation of materials under extremes of loading

Cite this