화학공학소재연구정보센터
Journal of Materials Science, Vol.37, No.12, 2483-2490, 2002
Microstructure, texture, and mechanical properties of continuously cast gamma TiAl
Microstructural and texture analyses have been conducted on two gamma titanium aluminide (gamma-TiAl) sheets produced via the melt overflow rapid solidification technique. For both alloy compositions relatively weak {101}(gamma) type fiber textures (less than or equal to3 x random) were observed which are indicative of solidification from a prior alpha phase field with rapid growth parallel to the[10 (1) over bar0](alpha) direction. The strengths of the strips were comparable to conventionally processed sheets however tensile ductility was low. The results are discussed with respect to recent studies of the influence of cooling rate on the solidification microstructure of cast titanium aluminides.