Quantification of strain localisation in a bimodal two-phase titanium alloy

David Lunt; Xu Xu; T. Busolo; João Quinta da Fonseca; Michael Preuss

doi:10.1016/j.scriptamat.2017.10.012

Quantification of strain localisation in a bimodal two-phase titanium alloy

David Lunt, Xu Xu, T. Busolo, João Quinta da Fonseca, Michael Preuss

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

Abstract

High Resolution Digital Image Correlation in combination with orientation imaging microscopy has been applied to compare quantitatively strain localisation in Ti-6Al-4V alloy with a bimodal microstructure subjected to two different ageing treatments, i.e. above and below the α2 solvus temperature. Interestingly, the most pronounced strain heterogeneity was observed in the secondary-α regions for the sample heat-treated to promote α2 formation. The high local strain was associated with intense slip bands within single long secondary-α laths with low levels of neighbouring strain, which is likely to have a significant impact on the low-cycle fatigue performance.

Original language	English
Pages (from-to)	45-49
Number of pages	5
Journal	Scripta Materialia
Volume	145
Early online date	13 Oct 2017
DOIs	https://doi.org/10.1016/j.scriptamat.2017.10.012
Publication status	Published - 1 Mar 2018

Keywords

Titanium alloys
slip
HRDIC
Plastic deformation
Tension test

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10.1016/j.scriptamat.2017.10.012Licence: CC BY

LightForm: Embedding Materials Engineering in Manufacturing with Light Alloys
Prangnell, P. (PI), Curioni, M. (CoI), Haigh, S. (CoI), Quinta Da Fonseca, J. (CoI), Robson, J. (CoI), Shanthraj, P. (CoI) & Zhou, X. (CoI)
1/10/17 → 18/10/23
Project: Research

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title = "Quantification of strain localisation in a bimodal two-phase titanium alloy",

abstract = "High Resolution Digital Image Correlation in combination with orientation imaging microscopy has been applied to compare quantitatively strain localisation in Ti-6Al-4V alloy with a bimodal microstructure subjected to two different ageing treatments, i.e. above and below the α2 solvus temperature. Interestingly, the most pronounced strain heterogeneity was observed in the secondary-α regions for the sample heat-treated to promote α2 formation. The high local strain was associated with intense slip bands within single long secondary-α laths with low levels of neighbouring strain, which is likely to have a significant impact on the low-cycle fatigue performance.",

keywords = "Titanium alloys, slip, HRDIC, Plastic deformation, Tension test",

author = "David Lunt and Xu Xu and T. Busolo and {Quinta da Fonseca}, Jo{\~a}o and Michael Preuss",

year = "2018",

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doi = "10.1016/j.scriptamat.2017.10.012",

language = "English",

volume = "145",

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T1 - Quantification of strain localisation in a bimodal two-phase titanium alloy

AU - Lunt, David

AU - Xu, Xu

AU - Busolo, T.

AU - Quinta da Fonseca, João

AU - Preuss, Michael

PY - 2018/3/1

Y1 - 2018/3/1

N2 - High Resolution Digital Image Correlation in combination with orientation imaging microscopy has been applied to compare quantitatively strain localisation in Ti-6Al-4V alloy with a bimodal microstructure subjected to two different ageing treatments, i.e. above and below the α2 solvus temperature. Interestingly, the most pronounced strain heterogeneity was observed in the secondary-α regions for the sample heat-treated to promote α2 formation. The high local strain was associated with intense slip bands within single long secondary-α laths with low levels of neighbouring strain, which is likely to have a significant impact on the low-cycle fatigue performance.

AB - High Resolution Digital Image Correlation in combination with orientation imaging microscopy has been applied to compare quantitatively strain localisation in Ti-6Al-4V alloy with a bimodal microstructure subjected to two different ageing treatments, i.e. above and below the α2 solvus temperature. Interestingly, the most pronounced strain heterogeneity was observed in the secondary-α regions for the sample heat-treated to promote α2 formation. The high local strain was associated with intense slip bands within single long secondary-α laths with low levels of neighbouring strain, which is likely to have a significant impact on the low-cycle fatigue performance.

KW - Titanium alloys

KW - slip

KW - HRDIC

KW - Plastic deformation

KW - Tension test

U2 - 10.1016/j.scriptamat.2017.10.012

DO - 10.1016/j.scriptamat.2017.10.012

M3 - Article

SN - 1359-6462

VL - 145

SP - 45

EP - 49

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Quantification of strain localisation in a bimodal two-phase titanium alloy

Abstract

Keywords

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LightForm: Embedding Materials Engineering in Manufacturing with Light Alloys

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