On 30th November 2004 the Association EURATOM-ÖAW (Vienna, Austria) organised her annual Association Day on Fusion Technology, which was hosted by TU-Wien/Atominstitut. At this meeting Austrian contributions to the EFDA Technology Work Programme 2004 and to the Underlying Technology Programme were presented and discussed by the respectively involved junior and senior scientists. Dr. Rainer Lässer (EFDA Garching) presented an overview on the development of materials with a view to ITER and DEMO. Dr. Ettore Salpietro (EFDA Garching) gave a lecture on “current task fields and developments in the Magnetic Structure and Integration Field”. In the field “Magnetic Structure and Integration” a research group of the Association EURATOM-ÖAW at the Atominstitut has achieved important results with regard to radiation resistivity of insulation material for the ITER magnet coil system. Irradiation experiments have shown that epoxy-based insulation materials will not sustain the expectable ITER neutron fluence level. Therefore new materials based on cyanate ester resins with better performance are presently tested. Another research group of the Association at the Erich-Schmid-Institut für Materialwissenschaft of ÖAW in Leoben (Austria) has acquired specialised know-how in the characterisation and improvement of high-temperature alloys (chromium and tungsten) for possible use in future fusion power plants. Dr. Giovanni Piazza (EFDA-JET Culham) presented a lecture on JET Technology in 2005 and 2006. The meeting was also attended by Dr. Günter Mank, Head of the Physics Section of the IAEA Department of Nuclear Science and Applications and by collaboration partners from laboratories in Germany, Hungary and Slovakia.

Tungsten and its alloys feature high melting point, low vapour pressure, good thermal conductivity, high erosion resistance and good thermoshock properties. Their ductileto- brittle transition temperature, however, is strongly dependent on processing and impurities. As this complicates machining of complex parts, low brittleness is essential and desired. At the Erich-Schmid- Institut für Materialwissenschaft of ÖAW in Leoben tests have been performed on various samples processed by Severe Plastic Deformation (SPD) methods to achieve optimum fracture toughness.