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EPSRC Reference: GR/M24240/01
Title: IMI: METHODS FOR CONTROLLING WELD MICROSTRUCTURES AND PROPERTIES (CEMWAM II)
Principal Investigator: Prangnell, Professor P
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Airbus Operations Limited BAE Systems Bombardier
British Aluminium Ltd Ministry of Defence (MOD) Rolls-Royce Plc (UK)
TWI Ltd
Department: Manchester Materials Science Centre
Organisation: UMIST
Scheme: LINK
Starts: 01 April 1999 Ends: 31 March 2002 Value (£): 192,960
EPSRC Research Topic Classifications:
Materials Processing Materials testing & eng.
EPSRC Industrial Sector Classifications:
Aerospace, Defence and Marine Energy
Transport Systems and Vehicles
Related Grants:
Panel History:  
Summary on Grant Application Form
The commercial gains of overcoming the metallurgical barriers to introducing automated welding technology to aircraft assembly are substantial. In previous work new filler materials have been developed which solve the primary cause of the lack of weldability of aluminium aircraft alloys, namely their poor resistance to solidification cracking. However a second tier of challenging, and equally important, problems have been identified which need to be solved if high quality, damage tolerant, welded joints are to be produced by fusion welding processes. These problems largely concentrate on the degradation of the parent material, due to partial melting, and the complex changes that can occur in the heat affected zone (HAZ). Understanding the mechanisms behind these problems and developing methods to control them are the focus of this project. An intensive experimental programme is required to understand the microstructural changes that can occur and determine their impact on the joint properties. In order to be able to integrate the design of the most efficient joint configuration with the control of the welding process, it also planned to develop the capacity to predict key mechanisms of microstructure degradation as a function of the process and conditions.
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