Development of chevron-shaped ? precipitates in Ti-5Al-5Mo-5V-3Cr

N.G. Jones; R.J. Dashwood; M. Jackson; D. Dye

doi:10.1016/j.scriptamat.2008.12.010

Development of chevron-shaped ? precipitates in Ti-5Al-5Mo-5V-3Cr

N.G. Jones
, R.J. Dashwood
, M. Jackson
, D. Dye

Imperial College London
University of Sheffield

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

85 Citations (Scopus)

Abstract

A unique chevron-like morphology of the hexagonal α phase has been observed in Ti–5Al–5Mo–5V–3Cr. The α precipitates were formed by direct ageing at 400 °C following solution treatment in the β phase field. Chevrons were imaged using both backscattered and transmitted electrons and were found to have a complex internal structure. It is hypothesized that the microstructure is developed through multiple site nucleation from ω particles formed during air cooling.

Original language	English
Pages (from-to)	571-573
Number of pages	3
Journal	Scripta Materialia
Volume	60
Issue number	7
DOIs	https://doi.org/10.1016/j.scriptamat.2008.12.010
Publication status	Published - Apr 2009

Keywords

Titanium alloys
Phase transformations
Metastable phases
Heterogeneous nucleation
Direct ageing

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10.1016/j.scriptamat.2008.12.010

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title = "Development of chevron-shaped ? precipitates in Ti-5Al-5Mo-5V-3Cr",

abstract = "A unique chevron-like morphology of the hexagonal α phase has been observed in Ti–5Al–5Mo–5V–3Cr. The α precipitates were formed by direct ageing at 400 °C following solution treatment in the β phase field. Chevrons were imaged using both backscattered and transmitted electrons and were found to have a complex internal structure. It is hypothesized that the microstructure is developed through multiple site nucleation from ω particles formed during air cooling.",

keywords = "Titanium alloys, Phase transformations, Metastable phases, Heterogeneous nucleation, Direct ageing",

author = "N.G. Jones and R.J. Dashwood and M. Jackson and D. Dye",

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AU - Jones, N.G.

AU - Dashwood, R.J.

AU - Jackson, M.

AU - Dye, D.

PY - 2009/4

Y1 - 2009/4

N2 - A unique chevron-like morphology of the hexagonal α phase has been observed in Ti–5Al–5Mo–5V–3Cr. The α precipitates were formed by direct ageing at 400 °C following solution treatment in the β phase field. Chevrons were imaged using both backscattered and transmitted electrons and were found to have a complex internal structure. It is hypothesized that the microstructure is developed through multiple site nucleation from ω particles formed during air cooling.

AB - A unique chevron-like morphology of the hexagonal α phase has been observed in Ti–5Al–5Mo–5V–3Cr. The α precipitates were formed by direct ageing at 400 °C following solution treatment in the β phase field. Chevrons were imaged using both backscattered and transmitted electrons and were found to have a complex internal structure. It is hypothesized that the microstructure is developed through multiple site nucleation from ω particles formed during air cooling.

KW - Titanium alloys

KW - Phase transformations

KW - Metastable phases

KW - Heterogeneous nucleation

KW - Direct ageing

U2 - 10.1016/j.scriptamat.2008.12.010

DO - 10.1016/j.scriptamat.2008.12.010

M3 - Article

VL - 60

SP - 571

EP - 573

JO - Scripta Materialia

JF - Scripta Materialia

IS - 7

ER -

Development of chevron-shaped ? precipitates in Ti-5Al-5Mo-5V-3Cr

Abstract

Keywords

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