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Details of Grant 

EPSRC Reference: GR/M22574/01
Title: MODELLING THE EVOLUTION OF MICROSTRUCTURE DURING PROCESSING OF TITANIUM ALLOYS
Principal Investigator: Guo, Professor ZX
Other Investigators:
Sha, Professor W Long, Professor AE
Researcher Co-Investigators:
Project Partners:
Pre Nexus Migration Shell
Department: Materials
Organisation: Queen Mary University of London
Scheme: Standard Research (Pre-FEC)
Starts: 15 January 1999 Ends: 14 January 2002 Value (£): 51,082
EPSRC Research Topic Classifications:
Materials Processing
EPSRC Industrial Sector Classifications:
Energy
Related Grants:
Panel History:  
Summary on Grant Application Form
The proposed research involves the computer modelling of thermodynamics and kinetics of phase transformation behaviour in titanium alloys. The goal is to model microstructural evolution of the alpha/beta and alpha', alpha'', alpha-2, omega phases as a function of thermal heat treatment, mechanical processing, and alloy chemistry (including specifically O, Al, V, Mo and Si). Problems special for titanium systems such as beta-2 ordering will be examined. Time-temperature-transformation (TTT) and continuous heating and cooling diagrams will be produced. Experimental validation, by measurement of the kinetics of growth and dissolution of alpha and other phases, will be conducted. Deconvolution of the collected data will allow estimation of unknown parameters such as diffusion coefficients and growth coefficients, which are required for Athe calibration of computer models. The model will be able to predict the effect of large scale segregation on microstructure variations. This project targets at the continuous improvement of an existing material, following the Technology Foresight Recommendation. The modelling techniques will help to make effective use of existing alloys, by reducing conservatism in component design and increasing reliability, and to reduce the time required for the development of new alloys, hence reducing industrial development time.
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