Latest Papers

Geometrically necessary dislocation densities in olivine obtained using high-angular resolution electron backscatter diffraction
D Wallis, LN Hansen, TB Britton, AJ Wilkinson
Ultramicroscopy (2016) vol. 169 34-45
doi:10.1016/j.ultramic.2016.06.002


On the effects of reorientation and shear transfer during twin formation: comparison between high resolution electron backscatter diffraction experiments and a crystal plasticity finite element model
H Abdolvand, AJ Wilkinson
Int J Plasticity (2016) available on-line from 24 May 2016
doi:10.1016/j.ijplas.2016.05.006


Tutorial: Crystal orientations and EBSD — Or which way is up?
TB Britton, J Jiang, Y Guo, A Villata-Clemente, D Wallis, L Hansen, A Winkelmann, AJ Wilkinson
Materials Characterization (2016) vol. 111 113-126
doi:10.1016/j.matchar.2016.04.008


Assessment of X-ray diffraction and crystal plasticity lattice strain evolutions under biaxial loading
TO Erinosho, DM Collins, AJ Wilkinson, RI Todd, FPE Dunne
Int J Plasticity (2016) vol. 83, 1-18
doi:10.1016/j.ijplas.2016.03.011


Assessment of residual stress fields at deformation twin tips and the surrounding environments
H Abdolvand, AJ Wilkinson
Acta Materialia (2016) vol. 105, 219-231
doi:10.1016/j.acttamat.2015.11.036


Sample size effects on grain boundary sliding
J Gong, AJ Wilkinson
Scipta Materialia (2016) vol. 114, 17-20
doi:10.1016/j.scriptamat.2015.11.029


A study of dislocation transmission through a grain boundary in hcp Ti-6Al using micro-cantilevers
R Ding, J Gong, AJ Wilkinson, IP Jones
Acta Materialia (2016) vol. 103, 416-423
doi:10.1016/j.actamat.2015.10.023


News

Ref-frames
Which way is up?
We have lost count of the number of person hours we have spent making sure that reference frames are correctly understood and described. This is absolutely vital for successful comparison of data between experiments, say EBSD and X-Ray DAXM or 3DXRD, and of course for transferring information to crystal plasticity simulations. Its seems like every time we setup a new instrument or go to a synchrotron beamline we haven't used before we have a slightly unsettling period while we establish and gain confidence that we have the important reference frames properly pinned down. Last time we went through this proces with EBSD kit in our labs we decided to write down the procedures in some detail. As we can't possibly be the only ones facing these issues we have shared our approach by publishing it (open access) in Materials Characterization. Hopfully this might be a useful resource to other groups and we would certainly welcome any feedback and/or approaches in use elsewhere. Establishing best practice on this is in everyones interest.

Ed Tarleton Awarded EPSRC Early Career Fellowship
Congratulation to Ed Tarleton on the award of his EPSRC Fellowship on Dislocation based modelling of deformation and fracture in real engineering alloys. The five years funding will allow Ed to continue his inovative modelling work. Developing simulations that capture the rich and complex interactions between, dislocations, diffusion, precipitate formation and fracture is central to Ed's work. Such capabilies are vital for us to maximise the understanding and therefore impact of many of the experimental programmes within the Micromechanics group. Ed is looking to grow his team in the near future and will be recruiting at both post-doc and doctoral student level.

Ed T
DMC Diamond-Infineum award photo

Diamond-Infineum ECR Prize for David Collins
David Collins has been awarded the Diamond-Infineum Early Career Researcher Prize for outstanding work produced using Diamond’s facilities in a research area relevant to the automotive sector. David received the award at the Illuminating Challenges in Automotive Research Conference where he was invited to present his award winning work on in-situ biaxial deformation. Congratulations David - its well deserved.


Meet us at

TMS 2016
TMS 2016

Nashville, TN, 14-18 February 2016
- invited presentation by Jicheng Gong on 'micromechanical fatigue testing'


RMS 2016
RMS Workshop and Conference on EBSD 2016

Manchester, UK, 21 March Tutorial Workshop/22-23 March Conference
- several members of the group will be contributing to the workshop and conference


HexMat logo
International Workshop on Mechanistic Behaviour of HCP Alloys

Pembroke Colege, Oxford, 30 March–1 April 2016
- several members of the group will be attending and Hamid A will be presenting


IUTAM2016
IUTAM Symposium on Integrated Computational Structure-Material Modeling of Deformation and Failure under Extreme Conditions 2016

Baltimore, MD, 19–22 June 2016
- invited presentation by Angus W


ECI nanomechanics
Nanomechanical Testing of Materials V

Albufeira, Portugal, 4-9 October 2015
- Angus W and Jicheng G will be attending and presenting talks/posters