Objetivo Objectives and content The aim of this project is to develop new superalloy compositions specifically designed for casting of large single crystal gas turbine blades for power generation. Replacement of conventionally cast blades by single crystal blades would permit an increase of the firing temperature, and consequently a better efficiency of the gas turbine. Other important consequences will be a reduction in fuel consumption and a decrease of the pollutant emission level. The specific working conditions of industrial gas turbines using low-grade fuels require materials with a high corrosion resistance in severe environment, in addition to a good stress-rupture strength with lives up to 50,000 hours, which is different from the conditions encountered in aeronautical gas turbines. Two sets of objectives will be persued corresponding to alloys satisfying the following requirements :i) corrosion resistance in synthetic ash at 700-800°C comparable to IN738LC and creep strength at 750-950°C comparable to IN792, ii) sulfidation resistance at 900-1000°C comparable to IN738LC and a typical stress-rupture life of 3,500 hours at 950°C and 140 MPa. Moreover, the alloys will have to show: i) a good castability as large single crystal components up to 50 cm height, ii) a good long term microstructural stability, iii) cost effectiveness. Needless to say that none of the currently available materials possess this overall combination of properties and therefore there is a strong need expressed by the European gas turbine industry to develop such new superalloys. The first phase of the work programme will include the definition of a set of experimental alloys using alloy design procedures, directional casting of single crystal test-pieces and components, corrosion, mechanical and microstructural screening tests. The two most promising alloys will be selected for an extended evaluation. Deformation models and a lifing method developed on the basis of the results of microstructural assessments will be used in order to predict the long-term behaviour of these alloys. Ámbito científico engineering and technologyenvironmental engineeringenergy and fuels Programa(s) FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998 Tema(s) 0201 - Materials engineering Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador Office National d'Etudes et de Recherches Aérospatiales Aportación de la UE Sin datos Dirección 29,Avenue de la Division Leclerc 92322 Chatillon Francia Ver en el mapa Coste total Sin datos Participantes (5) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo ELECTRICITE DE FRANCE SERVICE NATIONAL* Francia Aportación de la UE Sin datos Dirección Avenue du Général de Gaulle 1 92141 CLAMART Ver en el mapa Coste total Sin datos HAHN-MEITNER-INSTITUT BERLIN GMBH Alemania Aportación de la UE Sin datos Dirección 100,Glienicker Straße 100 14109 Berlin Ver en el mapa Coste total Sin datos Howmet Ltd Reino Unido Aportación de la UE Sin datos Dirección Kestrel Way EX2 7LG Exeter Ver en el mapa Coste total Sin datos TURBOMECA SA Francia Aportación de la UE Sin datos Dirección 64320 Bordes Ver en el mapa Coste total Sin datos Technische Universität Berlin Alemania Aportación de la UE Sin datos Dirección 36,Hardenbergstrasse 10623 Berlin Ver en el mapa Coste total Sin datos
