Entwicklung einer Schmiedetechnologie zur Herstellung von Verdichter-Laufschaufeln aus #gamma#-Titanaluminid. Teilprojekt C: Herstellung von Vormaterial fuer Schmiedeschaufeln aus #gamma#-TiAl und deren Gefuegeoptimierung Abschlussbericht

By the development of a new canning technique which resulted in an effective thermal isolation of can and billet the flow stress mismatch of can and billet material could be minimized, which allowed crack-free and uniform extrusion. Using this technique which has been applied for patent hot extrusion is an effective and matured working method for ingot material. It allows to produce fine-grained and almost fully recrystallized material with increased workability as has been found by the determination of the forging window as well as by the successful forging of more than 200 compressor blades by the project partner Thyssen Umformtechnik. By forging under suited conditions also a microstructural homogenization is achieved in comparison to extruded material. (orig.)SIGLEAvailable from TIB Hannover: F00B1247 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman