Isothermal Forging of TiAl-based Intermetallic Compounds.

Abstract

Fundam~ental study of the high temperature deformation of titanium aluminide. TiAl, has been conducted in order to develop the manufacturing process using isothermal forging. Theflow stress was exactly expressed using Zenner-Hollomon parameter as well as common metals. The recrystallization occurred during high temperature deformation, and structure was transformed from the lamellar structure to the fine recrystallized grain structure. And there were some deformation conditions where TiAl could be deformed without any defects up to 800/0 degree of reduction from as cast state.