Prof. Hongbiao Dong

Hong small picture

Prof. of Materials Engineering
Mechanics of Materials Research Group

BSc (Eng), MSc, PhD
T: +44 (0)116 252 2528
F: +44 (0)116 252 2525
E: h.dong@le.ac.uk

Location: Room 211, Michael Atiyah Building


Brief Biography:

I received a First Class BSc degree and a Master degree from University of Science and Technology Beijing, obtained my PhD in Materials Science from the University of Oxford in 2000.

I joined the Department of Engineering in 2004 from Imperial College London, where I worked on modelling microstructure evolution in aero-engine turbine blades. Since October 2006 I has been awarded a Royal Society Industry Fellowship to conduct research at Rolls-Royce plc.


Main Research Interests:

Materials Modelling, Aerospace Materials, Calorimetry & Materials Thermal Analysis, Engineering Design

Materials, today, are evolving faster than at any time in history. The development of new materials has been regarded as an “underpinning technology” – which can stimulate innovation in all branches of engineering, making possible new designs for structures, engines, electrical and electronic devices, energy conservation equipments and many more. The materials industry in the UK has traditionally supported a diverse set of industry across the power generation, transportation and construction sectors. My research aims to bring knowledgeinspired decision making to production routes of high valueadded components, such as aero-engine turbine blades. I have three research areas of expertise:Materials, today, are evolving faster than at any time in history. The development of new materials has been regarded as an “underpinning technology” – which can stimulate innovation in all branches of engineering, making possible new designs for structures, engines, electrical and electronic devices, energy conservation equipments and many more. The materials industry in the UK has traditionally supported a diverse set of industry across the power generation, transportation and construction sectors. My research aims to bring knowledgeinspired decision making to production routes of high valueadded components, such as aero-engine turbine blades, deep sea oil and gas transport systems.

My modelling work has allowed an in-depth understanding of microstructure evolution and defect formation during solidification. Microscale and nanoscale structure models have been developed and the predicted results using the models fit well with experimental observations for Ni-base superalloys, new Magnesium alloys. Microstructure evolution and the formation of defects during casting of single crystal and polycrystalline materials have been visualised with detailed structure information. The developed experimental technique is able to quantify materials thermophysical properties with an order of magnitude higher accuracy than conventional techniques, such as Differential Scanning Calorimetry (DSC). The new technique has now been used by several industrial laboratories and Universities. This work was awarded a commendation in “Metrology for World Class Manufacturing Award”. My research articles in above areas have been cited by many world leaders in the fields.

The outcome of my research not only provides a better fundamental understanding of materials processing, but also leads to improved/novel processing techniques and hence the engines in aeroplanes, cars and power generating gas turbines can operate at higher temperatures with higher efficiency, reducing CO2 emissions to protect environment.

Current Major Research Projects:

1. FP7 Project Mintweld

Dr Dong is leading a consortium for an European Framework (FP7) project on the Modelling of Interface Evolution in Advanced Welding (MintWeld). This 4-year research project started in September 2009, and aims to deliver an accurate, predictive, and cost-effective modelling tool that will find widespread application in the relevant European metals industry for penetrating novel markets of high economic and strategic importance, an essential task to ensure that Europe maintains its competitiveness. The consortium includes well known academic partners (University of Leicester UK -Coordinator, University College Dublin Ireland, University of Oxford UK, NTNU Norway, Royal Institute of Technology Sweden, Delft University of Technology Netherlands, and the Ecole Polytechnique Fédérale de Lausanne Switzerland) and partners representing the major European steel industries (CORUS UK, The Welding Institute UK, Institute of Welding Poland, and FRENZAK Sp. Poland). The European Commission will contribute 3.55 million euro to this 5 million euro project.

Further news stories regarding this project can be found via Google

Mintweld project website: www.le.ac.uk/mintweld and www.mintweld.org

2. Grain Selection and Microstructure Evolution during Processing Aero-engine Turbine Blades
This is my on-going research at Rolls-Royce with collaborators from Rolls-Royce, Universities of Cambridge and Birmingham. It aims to bring knowledge-inspired decision making to production routes of aero-engine turbine blades. As an example, by detailed examination of modelling results, I originated a patent for producing new single crystals with finer microstructures. The new processing route results in not only saving manufacturing costs but also leading to new materials with higher performance.

3. Combined Calorimetry-X-Ray Radiography: Characterisation of Alloy Solidification via In Situ Thermodynamic and Morphological Measurement
The aim of this proposal is to develop a novel combined Calorimetry-X-Ray Radiography (X-Cal) system to characterise phase transformations In Situ via thermodynamic and morphological measurement at meso- and micro- length scales. It is expected that the first such combined technique will be able to provide critical information and promote a better fundamental understanding of phase transformations and their influence upon the nature of the processing-structure-property relationship. The obtained quantitative information will be of great useful to British Industry in modelling and optimising existing processes in the metals and materials sectors.

4. Product Design of Single-pan Scanning Calorimeter 

This is to carry out product design of an award-wining Single-Pan Scanning Calorimetry (SPSC) which was invented by me during my PhD study at Oxford. The prototype SPSC has been relocated to Leicester from NPL (NPL bought the prototype from Oxford when I left Oxford).  Various prototypes of SPSC has been built at Leicester which will be used in several proposed research projects.

5. Developing Phase-Field Solidification Models using Dynamic Adaptive Meshing (DAM)
By using adaptive meshing algorithm, DAMS allows great increases in computational efficiency, making possible simulations of microstructures that are accurately resolved down to tens of nanometers at the solid-liquid interface. Therefore DAM can simulate large-scale solidification microstructures in parameter regimes previously inaccessible through conventional fixed-grid techniques, enabling a complete description of solidification.

6. Developing Front-tracking Solidification Models


Teaching:

  • EG2070 Engineering Design
  • EG2150 Processing of Engineering Materials
  • EG4021 Design Study Management (I)
  • EG4021 Design Study Management (II)
  • EG4360 Aerospace Materials
  • EG7038 Aerospace Materials

Selected Publications:

  • H. T. Pang, H. B. Dong, R. Beanland, H. J. Stone, C. M. F. Rae, P.A. Midgley, G. Brewster, N. D’Souza, Microstructure and Solidification Sequence of the Inter-Dendritic Region in a 3rd Generation Single Crystal Nickel-Base Superalloy, Metall. Mater. Trans A., Vol 40 (2009), 1660-1669
  • H.J. Dai, J-C. Gebelin, M. Newell, N.D’Souza, P.D. Brown, H.B. Dong, Grain Selection during Solidification in Spiral Grain Selector, in proceedings of Superalloys 2008, Editors R.C. Reed et al, 367-374
  • H.B. Dong, Grain Selection during Directional Solidification of Aero-engine Turbine Blades, AIP Conference Proceedings, Volume 1045, 2008, Pages 51-60
  • E.C. Kurum, H.B. Dong, J.D. Hunt, Microsegregation in Al-Cu Alloys, Metall. Mater. Trans A., 36A (2005), 3103-3110
  • H.B. Dong and P.D. Lee, Simulation of Columnar-to-Equiaxed Transition in Directionally Solidified Al-Cu Alloys, Acta Mater. 53 (2005) 659-668.
  • H.B. Dong, M.R.M. Shin, E.C. Kurum, J.D. Hunt, H. Cama, A Study of Microsegregation in Al-Cu Using a Novel Single- Pan Scanning Calorimeter, Metall. Mater. Trans A 34 (2003) 441-447.

 

Further information, please visit: http://www.le.ac.uk/eg/hd38/

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