2009 PhD (Imperial College London)
2005 MEng Materials Science and Engineering (Imperial College London)
High Temperature Materials
The European Commission has set challenging emission targets for the aerospace industry. Meeting these requirements will require the next generation of gas turbine engines to operate at higher temperatures and run at higher rotational speeds. These conditions are beyond the capability of currently available materials, and thus our research is focused on developing new solutions, both in conventional Ni-based superalloys and novel metallic-intermetallic systems.
Micromechanics and Functional Fatigue of Transforming Alloys
Transforming materials, such as shape memory alloys, have the potential to revolutionise traditional engineering concepts by introducing components that are functional as well as structural. However, the properties of these materials are often found to cyclically deteriorate, so called functional fatigue, which has limited their widespread uptake. Our research is aimed at developing a fundamental understanding of the micromechanics of these materials through high energy synchrotron diffraction studies.
Themomechanical Processing of Engineering Alloys
The majority of engineering components used today have been thermomechanically processed prior to application. These processes are not only part of the forming operation, but in many cases, are critical in developing the correct microstructure and key mechanical properties required in service. Therefore, it is hugely important to understand the deformation behaviour of materials during processing, and to establish accurate descriptions of the active mechanisms. Our research in this area covers a range of engineering alloys, developing mechanistic understanding from microstructural and process data.
- N. G. Jones and D. Dye: Influence of applied stress on the transformation behaviour and martensite evolution of a Ti-Ni-Cu shape memory alloy, Intermetallics 32 (2013) 239
- N. G. Jones and D. Dye: Martensite evolution in a NiTi shape memory alloy when thermal cycling under and applied load, Intermetallics 19 (2011) 1348
- N. G. Jones and M. Jackson: On the mechanism of flow softening in Ti-5Al-5Mo-5V-3Cr, Materials Science and Technology 27 (2011) 1065
- N. G. Jones, R. J. Dashwood, M. Jackson and D. Dye: Beta phase decomposition in Ti-5Al-5Mo-5V-3Cr, Acta Materialia 57 (2009) 3830
- M. Jackson, N. G. Jones, D. Dye and R. J. Dashwood: Effect of Initial Microstructure on Plastic Flow Behaviour during Isothermal Forging of Ti-10V-2Fe-3Al, Materials Science and Engineering A 501 (2009) 248
- N. G. Jones, R. J. Dashwood, D. Dye and M. Jackson: Thermomechanical Processing of Ti-5Al-5Mo-5V-3Cr, Materials Science and Engineering A 470 (2008) 369
- J. L. W. Warwick, N. G. Jones, I. Bantounas, M. Preuss and D. Dye: In-situ observation of texture and microstructural evolution during rolling and globularisation of Ti-6Al-4V, Acta Materialia 61 (2013) 1603
- H-Y. Yan, V. A. Vorontsov, J. Coakley, N. G. Jones, H. J. Stone and D. Dye: Quaternary alloying effects and the prospect of a new generation of Co-base superalloys, Superalloys 2012, E. S. Huron, R. C. Reed, M. C. Hardy, M. J. Mills, R. E. Montero, P. D. Portella and J. Telesman (Eds), TMS 2012, p.705
- J. L. W. Warwick, N. G. Jones, K. M. Rahman and D. Dye: Lattice strain evolution during tensile and compressive loading of CP Ti, Acta Materialia 60 (2012) 6720
- D. Dye, F. Hu and N. G. Jones: Microstructure formation in alpha-beta titanium alloys, Ti-2011: L. Zhou, H. Chang, Y. Lu and D. Xu (Eds), Science Press Beijing 2012, p. 404
- N. G. Jones, R. J. Talling, T. C. Lindley and D. Dye: Failure behaviour and energy adsorption in Gum metal (Ti-36Nb-2Ta-3Zr-O), Ti-2011: L. Zhou, H. Chang, Y. Lu and D. Xu (Eds), Science Press Beijing 2012, p. 1169
- C. Evans, N. G. Jones, D. Rugg, T. C. Lindley and D. Dye: The effect of deformation mechanisms on the high temperature plasticity of Zircaloy-4, Journal of Nuclear Materials 424 (2012) 986
- N. G. Jones, C. M. Ward-Close, P. M. Brown and D. Dye: An evaluation of the tensile properties of a supersaturated carbon layer via in situ synchrotron diffraction, Scripta Materialia 63 (2010) 85
- N. G. Jones, S. L. Raghunathan, D. Dye: In situ synchrotron characterisation of transformation sequences in TiNi based shape memory alloys during thermal cycling, Metallurgical and Materials Transactions A 41 (2010) 912
- N. G. Jones, R. J. Dashwood, M. Jackson and D. Dye: Development of chevron shaped alpha precipitates in Ti-5Al-5Mo-5V-3Cr, Scripta Materialia 60 (2009) 571