%0 journal article
%@ 1946-4274
%A Staron, P.,Schimansky, F.-P.,Scheu, C.,Clemens, H.

%D 2011
%J MRS Online Proceedings Library
%N 
%P 195-200 
%R doi:10.1557/opl.2011.387
%T SANS study of carbon addition in Ti–45Al–5Nb
%U https://doi.org/10.1557/opl.2011.387
 
%X The distribution of carbon in Ti–45Al–5Nb–0.5C was studied using small-angle neutron scattering (SANS). In an earlier study, carbon had been found to form small perovskite precipitates in a γ-TiAl alloy without Nb, which significantly increase the strength of the material. In the Nb-containing alloy, however, no strengthening precipitates were observed, but most of the C was found to be homogeneously distributed. Atom probe investigations revealed only few C-enriched regions. The present SANS investigation was carried out to confirm the presence and size distribution of these C-enriched regions in the material. The SANS results show that a small volume fraction of such C-enriched regions is present, while the large number of small precipitates found in the alloy without Nb is indeed missing in the Nb-containing alloy.