Imperial College London
Alternate

ProfessorFionnDunne

Faculty of Engineering, Department of Materials

Principal Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 2884fionn.dunne

 
 
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Location

 

104Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Zhang:2016:10.1016/j.jmps.2016.06.007,
author = {Zhang, Z and Jun, T and Britton, TB and Dunne, F},
doi = {10.1016/j.jmps.2016.06.007},
journal = {Journal of the Mechanics and Physics of Solids},
pages = {393--410},
title = {Determination of Ti-6242 α and β slip properties using micro-pillar test and computational crystal plasticity},
url = {http://dx.doi.org/10.1016/j.jmps.2016.06.007},
volume = {95},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The properties and behaviour of an α−β colony Ti-6242 alloy have been investigated at 20 °C utilising coupled micro-pillar stress relaxation tests and computational crystal plasticity. The β-phase slip strength and intrinsic slip system strain rate sensitivity have been determined, and the β-phase shown to have stronger rate sensitivity than that for the α phase. Close agreement of experimental observations and crystal plasticity predictions of micro-pillar elastic-plastic response, stress relaxation, slip activation in both α and β-phases, and strain localisation within the α−β pillars with differing test strain rate, β morphology, and crystal orientations is achieved, supporting the validity of the properties extracted. The β-lath thickness is found to affect slip transfer across the α−β−α colony, but not to significantly change the nature of the slip localisation when compared to pure α-phase pillars with the same crystallographic orientation. These results are considered in relation to rate-dependent deformation, such as dwell fatigue, in complex multiphase titanium alloys.
AU  - Zhang,Z
AU  - Jun,T
AU  - Britton,TB
AU  - Dunne,F
DO  - 10.1016/j.jmps.2016.06.007
EP  - 410
PY  - 2016///
SN  - 0022-5096
SP  - 393
TI  - Determination of Ti-6242 α and β slip properties using micro-pillar test and computational crystal plasticity
T2  - Journal of the Mechanics and Physics of Solids
UR  - http://dx.doi.org/10.1016/j.jmps.2016.06.007
UR  - https://www.sciencedirect.com/science/article/pii/S0022509616302307
UR  - http://hdl.handle.net/10044/1/37395
VL  - 95
ER  -
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