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New design tools for creep resistant aluminum structures

Objective


Foreseen Results

The improved understanding and predictive methodologies to be advanced here, that will be applicable to any industrial engineering application, will enable the cost effective development of new lightweight components for long term applications at elevated temperature without the expensive delaying necessity of real time, long term testing.
The technical objective of this proposal is to develop and validate methodologies for prediction of the creep strain and creep damage that can occur during the use of aluminum alloys for long durations at elevated temperature. The principal aim is to develop design tools that can take into account the creep deformations and creep damage in the real conditions of application, these design tools using parameters calculated from short time laboratory tests.

This predictive capability is a critical asset in the competitive development of different sectors of the transport and of the energy supply industries, in regard to weight reduction, with the correlated fuel consumption and pollution reduction, and improvement of reliability and maintainability.

The research will be achieved by completion of the following tasks :

Definition of requirements (consistency with existing design tools, limits in terms of stress, temperature, duration)
Fabrication of samples in creep resistant A K4-2 (mod. 2618) aluminum alloy
Creep tests in different configurations (stress, temperature)
Microstructural investigations, assessment of thermal stability of the alloy in the different creep test conditions
Analysis of creep results - development of new prediction models based on modification of existing models
Validation of the development model
Transfer of the developed model to existing design tools

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

AEROSPATIALE MATRA SA
Address
Rue Pasteur
92152 Suresnes
France

Participants (3)

All Russian Institute of Aviation Materials
Russia
Address
17,Radio Street
107005 Moscow
BAE SYSTEMS (OPERATIONS) LTD
United Kingdom
Address
New Filton House
BS99 7AR Bristol
Secretary of State for Defence - Ministry of Defence
United Kingdom
Address
Ively Road
GU14 0LX Farnborough - Hampshire