%0 journal article
%@ 0921-5093
%A Appel, F.,Oehring, M.,Paul, J.D.H.

%D 2008
%J Materials Science and Engineering  A
%N 1-2
%P 232-236 
%R doi:10.1016/j.msea.2007.08.095
%T A novel in situ composite structure in TiAl alloys
%U https://doi.org/10.1016/j.msea.2007.08.095
1-2 
%X Phase decomposition and ordering reactions in /B2-phase containing TiAl alloys were utilized to establish a novel, previously unreported, type,of in situ composite. The characteristic constituents of this composite are laths with a modulated substructure that are comprised of several stable and metastable phases. The modulation occurs at the nanometer-scale and thus leads to a significant refinement of the material. Microstructural control,by conventional thermomechanical processing results in a structurally and chemically very homogeneous material with appreciable mechanical,properties. The physical metallurgy of this novel type of alloy has been assessed by high-resolution transmission electron microscopy and mechanical testing.