Investigator: RNDr. Antonín Dlouhý, CSc.
Number of Project: 106/04/0853
Agency: Czech Science Foundation
Duration: 01. 01. 2004 - 31. 12. 2006

A melting in classical vacuum induction furnaces equipped with ceramic crucibles followed by a gravity casting into ceramic shell moulds represents a processing route that reduces the production cost of gamma TiAl components. This melting and casting technology is difficult in the case of complex-shaped intermetallic castings that are prone to macroscopic cracking. The project is thus aimed at the analysis of thermoelastic stresses in the system intermetallic cast - ceramic shell mould. The two principal solution steps are based on the numerical simulation of non-stationary heat conduction and associated stress states in the system. Databases of gamma TiAl creep properties and ceramic shell thermal expansions are extensively used.

A. Dlouhý, L. Zemčík:
Slévárenství 52 (6) (2004) 227-232

L. Zemčík, A. Dlouhý:
Slévárenství 52 (6) (2004) 223-227