%0 Artikel
%@ 0966-9795
%A Imayev, R.M.
%A  Imayev, V.M.
%A  Oehring, M.
%A  Appel, F.

%D 2007
%J Intermetallics
%N 1162
%P 451 - 460 
%R doi:10.1016/j.intermet.2006.05.003
%T Alloy design concepts for refined gamma titanium aluminide based alloys 
%U http://dx.doi.org/10.1016/j.intermet.2006.05.003
4 
%X The influence of the Al content and the addition of further alloying elements on the cast microstructure of γ(TiAl) + α2(Ti3Al) alloys has been examined. The results show that particularly fine and homogeneous microstructures without strong segregation can be obtained for certain alloy compositions solidifying through the β phase. This behavior can be attributed to the avoidance of peritectic solidification and to the alloying influence on the kinetics of the β implies α transformation following solidification. The experimental findings were used to propose a design concept for γ-TiAl + α2-Ti3Al alloys. This concept aims at the production of high-quality castings as well as at ingot material for wrought processing routes because the chemically homogeneous and fine-grained microstructures would be a good precondition for improved workability.