Dr Alessandro Mottura MEng, PhD

 

Lecturer
Birmingham Fellow

School of Metallurgy and Materials

mottura-alessandro-Cropped-110x146

Contact details

University of Birmingham
Edgbaston
Birmingham
B15 2TT
UK

About

Dr Alessandro Mottura is a Lecturer in Physical Metallurgy. He received his PhD in Materials Science and Engineering from Imperial College London (2010), working under Professor Mike W Finnis and Professor Roger C Reed, and his MEng in Materials Science and Engineering from Imperial College London (2006). Following his PhD, Dr Mottura joined the group of Professor Tresa M Pollock as a Research Fellow at the University of California, Santa Barbara and was hired by the University of Birmingham in June 2012.

His research interests revolve around the understanding of how chemistry affect phase stability and mechanical properties in advanced alloys (Ni-based superalloys, Co-based superalloys, Ti alloys). His research work combines atomic-scale modelling methods with a wide variety of experimental techniques.

Qualifications

  • PhD in Materials Science and Engineering, Imperial College London, 2010
  • MEng in Materials Science and Engineering, Imperial College London, 2006

Biography

Alessandro Mottura received his MEng degree (first class) in Materials Science and Engineering in 2006, from Imperial College London. He went on to study for a PhD in Metallurgy under the supervision of Professor Mike W Finnis and Professor Roger C Reed, also at Imperial College London. During his PhD, Alessandro Mottura focussed on explaining how rhenium additions affect the creep properties of single-crystal Ni-based superalloys. This work was part of a wider effort to establish a more rigorous path to the design of new alloys, carried out in collaboration with the University of Oxford, the University of Cambridge and the University of Birmingham. Alessandro’s research involved the use of density functional theory (DFT) simulations, atom probe tomography (APT) and extended x-ray absorption fine spectroscopy (EXAFS) to establish and clarify the role of rhenium in these alloys.

After obtaining his PhD, Alessandro joined the group of Professor Tresa M Pollock, at the University of California, Santa Barbara. At UCSB, Alessandro kept working on using DFT simulations to guide the design of new γ’-strengthened Co-based superalloys. Beside his involvement on the design of new Co-based superalloys, Alessandro also worked on building a new 3-dimensional characterisation tool that utilises a femtosecond laser to ablate material layer by layer, and an electron microscope to image the newly revealed surface at each step. Albeit working in a similar way to FIB-tomography (or serial-sectioning) this technique allows the generation of much larger multi-modal datasets that include both chemical and crystallographic information.

Teaching

Teaching Programmes

  • FY/BFA: Properties of Matter

Postgraduate supervision

No PhD projects available at this time.

Research

Research themes

  • Effect of chemistry on phase stability, formation and transformations
  • Effect of chemistry on mechanical properties
  • Point, line and planar defects
  • Evolution of microstructure during creep
  • Solute partitioning in microstructure
  • Multi-scale, multi-modal 3-dimensional material analysis
  • Femtosecond laser tomography

Research activity

  • Stability of the γ’ phase in Co-based superalloys 
  • Solute additions and high temperature properties in Ti alloys 
  • Solute effects on creep properties in Ni-based superalloys

Publications

  • A. Mottura, A. Janotti and T.M. Pollock (2012). A first principles study of the effect of Ta on the superlattice intrinsic stacking fault energy of L1<sub>2</sub>-Co<sub>3</sub>(Al,W). Intermetallics 28, September 2012, pages 138-143 http://dx.doi.org/10.1016/j.intermet.2012.04.020
  • A. Mottura, M.W. Finnis and R.C. Reed. On the possibility of rhenium clustering in nickel-based superalloys. Acta Materialia 60 (6-7), April 2012, pages 2866-2872 http://dx.doi.org/10.1016/j.actamat.2012.01.051
  • M.P.~Echlin, A.~Mottura, C.J.~Torbet and T.M.~Pollock. The TriBeam: femtosecond laser aided FIB tomography. Review of Scientific Instruments 83 (2), February 2012. http://link.aip.org/link/doi/10.1063/1.3680111
  • A.~Mottura, N.~Warnken, M.K.~Miller, M.W.~Finnis and R.C.~Reed. Analysis of the distribution of rhenium in nickel alloys using atom probe tomography. Acta Materialia 58 (3), February 2010, pages 931-942. http://dx.doi.org/10.1016/j.actamat.2009.10.008
  • A.~Mottura, R.T.~Wu, M.W.~Finnis and R.C.~Reed. A critique of rhenium clustering in Ni-Re alloys using Extended X-ray Absorption Spectroscopy. Acta Materialia 56 (11), June 2008, pages 2669-2675. http://dx.doi.org/10.1016/j.actamat.2008.01.032

Expertise

Modelling and simulations of advanced alloys: phase stability, phase transformations and mechanical properties; characterisation of metallic materials at the atomic scale; materials for aerospace and energy applications.

Expertise

Modelling and simulations of advanced alloys: phase stability, phase transformations and mechanical properties; characterisation of metallic materials at the atomic scale; materials for aerospace and energy applications.

Back to top