Professor Brad Wynne

Professor Bradley P Wynne

BEng PhD 
Culham Chair in Materials Technology
EPSRC High Value Manufacturing Catapult Fellow

Telephone:+44 (0) 114 222 6026
Fax: +44 (0) 114 222 5943
Email: b.wynne@sheffield.ac.uk

Address: Department of Materials Science and Engineering, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD

Bradley Wynne joined the Department of Materials Science and Engineering in February 2002 having previously been an IMMPETUS Research Fellow in the Department of Mechanical Engineering, University of Sheffield. Before coming to Sheffield he worked as a Research Fellow in the Department of Materials Engineering, Monash University, Australia on Ultra-low carbon steels. He also gained his BEng and PhD from Monash.

Research interests

On appointment as a lecturer we quickly developed a number of independent research themes, which has led to a number of innovative microstructure characterisation and processing solutions, particularly for titanium, but also in magnesium alloys and steels. In 2003, in collaboration with Servotest Ltd, we designed the world unique Arbitrary Strain Path machine, which was installed in 2004. This machine is capable of either concurrent or sequential torsion/reverse torsion and tension/compression at high temperature and strain rates.

We have also instigated and developed industrial led projects with Firth Rixson, Timet UK, Magnesium Elektron, TWI, Tata, Boeing, Rolls Royce, Sheffield Forgemasters, and RTI. For example, working with Timet UK on understanding the impact of process route on microstructure and crystallographic texture in safety critical aerospace titanium alloys. This work also resulted in the development of a computer code to reconstruct the high temperature beta microstructure and texture from the as-transformed low temperature alpha microstructure, which is now used in a number of labs around the world.

Research group and centres

Research group

  • Dr Krzysztof Muszka
  • Mr Muhaed Alali
  • Mr Ioannis Lambrou
  • Mr Edgar Saldana Garza
  • Mr Ioannis Violatos
  • Mr James Pollard
  • Mr Michael Howson
  • Mr Jared Kitchen
  • Mr Faris Karouni

Research centres

Catapult

Culham Centre for Fusion Energy
Professional activities and recognition
  • >80 papers mostly in thermomechanical processing and microstructure characterisation
  • >15 invited international and national talks
  • Supervised over 20 PhD students, the majority of whom have gone to work in industry.
  • Member of the Engineering and Physical Science Research Council (EPSRC) UK Peer Review College
  • Member of the Organising Committee of the 4th International Conference on Recrystallization and Grain Growth, 2010
  • Scientific Organiser of 15th Royal Microscopy meeting on Electron Backscattered Diffraction
  • Received 2012 Harvey Flower Prize
Key publications

• L. Sun, K. Muszka, B.P. Wynne, E. J. Palmiere (2014), “Influence of strain history and cooling rate on the austenite decomposition behavior and phase transformation products in a microalloyed steel”, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 45(8):3619-3630. Read more.

• L. Sun, K. Muszka, B. P. Wynne, E. J. Palmiere (2014), “Effect of strain path on dynamic strain-induced transformation in a microalloyed steel”, Acta Materialia 66:132-149. Read more.

• M.M.Z. Ahmed, B.P. Wynne, J.P. Martin (2013), “Effect of friction stir welding speed on mechanical properties and microstructure of nickel based super alloy Inconel 718”, Science and Technology of Welding and Joining 18(8):680-687. Read more.

• R. Bhattacharya, B.P.Wynne, W.M. Rainforth (2012), “Flow softening behavior during dynamic recrystallization in Mg-3Al-1Zn magnesium alloy”, Scripta Materialia 67(3):277-280.

• P. Crawforth, B. Wynne, S. Turner, M. Jackson, “Subsurface deformation during precision turning of a near-alpha titanium alloy”, Scripta Materialia 67(10):842-845. Read more.

• M.M.Z. Ahmed, B.P. Wynne, W.M. Rainforth, P.L. Threadgill (2012), “Microstructure, crystallographic texture and mechanical properties of friction stir welded AA2017A”, Materials Characterization 64:107-117. Read more.

• E. J. Palmiere, B.P. Wynne, eds. (2012), “Recrystallization and Grain Growth IV”, Proceedings Fourth International Conference on Recrystallization and Grain Growth, July 4-9, 2010, Sheffield, UK. Read more.

• P.S. Davies, B.P. Wynne, W.M. Rainforth, M.J. Thomas, P.L. Threadgill (2011), “Development of Microstructure and Crystallographic Texture during Stationary Shoulder Friction Stir Welding of Ti-6Al-4V”, METALL MATER TRANS A 42A(8):2278-2289. Read more.

• R. Bhattacharya, B.P. Wynne (2011), “Hot working and crystallographic texture analysis of magnesium AZ alloys”, Materials Science and Technology 27(2):461-477. Read more.

• L. Sun, K. Muszka, B. P. Wynne, E. J. Palmiere (2011), “The effect of strain path reversal on high-angle boundary formation by grain subdivision in a model austenitic steel”, Scripta Materialia 64(3):280-283. Read more.

• M.M.Z. Ahmed, B.P. Wynne, W.M. Rainforth, P.L. Threadgill (2011), “Through-thickness crystallographic texture of stationary shoulder friction stir welded aluminium”, Scripta Materialia 64(1):45-48. Read more.

• L. Sun, M.J. Thomas, B.P. Wynne, E.J. Palmiere, K.P. Mingard, B. Roebuck (2010), “Mapping microstructure inhomogeneity using electron backscatter diffraction in 316L stainless steel subjected to hot plane strain compression tests”, Materials Science and Technology 26(12):1477-1486. Read more.

• P.L. Threadgill, M.M.Z. Ahmed, B.P. Wynne, J.P. Martin, J.G. Perrett (2010), “The use of bobbin tools for friction stir welding of aluminium alloys”, Materials Science Forum 638-642:1179-1184. Read more.

• M.M.Z. Ahmed, B.P. Wynne, W.M. Rainforth, P.L. Threadgill (2008), ‘Quantifying crystallographic texture in the probe-dominated region of thick-section friction-stir-welded aluminium’, SCRIPTA MATER 59(5):507-510. Read more.

• Peter Davies, Winfried Kockelmann, Brad Wynne, Roger Eccleston, Bevis Hutchinson and W Mark Rainforth (2008), ‘Validation of neutron texture data on GEM at ISIS using electron backscattered diffraction’, Meas. Sci. Technol. 19, 034002. Read more.

• Kubota, Masahiro; and Wynne, B. P. (2007) ‘Electron backscatter diffraction (EBSD) analysis of mechanically milled and spark plasma sintered pure aluminium’, Scripta Materialia 57 pp 719–722. Read more.

• Wynne, Bradley; Hutchinson, Bevis; and Ryde, Lena (2007) ‘Effect of Stress on Transformation Plasticity and Texture in a Tool Steel’, Scripta Materialia Volume 57, Issue 6, September 2007, Pages 473-476. Read more.

• M.J. Thomas, B.P. Wynne and W.M. Rainforth, (2005) ‘An alternative method to separate and analyse the microtextures and microstructures of primary alpha grains and transformed beta grains in near-α titanium alloy Timetal 834’, Materials Characterization 55, Issues 4-5, November 2005, Pages 388-394. Read more.

• G. Angella, B.P. Wynne, W.M. Rainforth and J.H. Beynon (2005), ‘Microstructure evolution of AISI 316L in torsion at high temperature’, Acta Materialia, Volume 53, Issue 5, March 2005, Pages 1263-1275. Read more.

• C.M. Sellars and B.P. Wynne (2004), ‘Microstructural evolution - effects of microstructural and hot processing variables’ (invited paper)’ Proceedings of 25th Risø International Symposium on Materials Science: Evolution of Deformation Microstructures in 3D. Editors C. Gunglach et al. Risø National Laboratory, Denmark, 2004. pages 117-136.

• R.M. Poths, G. Angella, B.P. Wynne, W.M. Rainforth, S.L. Semiatin and J.H. Beynon (2004), ‘Effect of Strain Reversal on the Dynamic Spheroidization of Ti-6Al-4V during Hot Deformation’, Metallurgical And Materials Transactions A, Volume 35a, September 2004, pages 2993-3001. Read more.