SOME STUDIES REGARDING THIXOFORMING OF METAL-ALLOYS

Aluminium-based alloys were tested. The thixoforming conditions were o btained using the strain induced, melt activated (SIMA) method. Before thixoforming, the alloys were deformed at room temperatures and then heated to the temperature above the solidus. The temperatures of begin ning and end of recrystallisation as well as volume of solid particles surrounded by liquid phase were determined during heating in these ex periments. The relationships describing kinetics of recrystallisation and coagulation of particles were established. The developed procedure has been used for thixoforging of model forgings with a complex shape in a single step operation. (C) 1998 Elsevier Science S.A. All rights reserved.