%0 Journal Article
%A Wang, Li
%A Lorenz, Uwe
%A Münch, Mathias
%A Stark, Andreas
%A Pyczak, Florian
%T Influence of alloy composition and thermal history on carbide precipitation in γ-based TiAl alloys
%J Intermetallics
%V 89
%@ 0966-9795
%C Amsterdam [u.a.]
%I Elsevier Science
%M PUBDB-2017-14129
%P 32 - 39
%D 2017
%Z © Elsevier Ltd.
%X Carbide precipitation in TiAl alloys with different alloying element additions and thermal history was investigated by transmission electron microscopy and high energy X-ray diffraction. The results reveal that Nb addition in TiAl alloys does not increase the carbon solubility in the γ matrix significantly. With increasing carbon concentration in the alloys, a splitting of the P-type carbides takes place earlier in the course of ageing at 800 °C and the formation of H-type carbides is promoted. For a nearly single γ phase alloy Ti-51Al-5Nb-0.5C, H-type carbides are the thermodynamically stable phase. However, with decreasing Al concentration, P-type carbides become thermodynamically stable at low carbon concentration (below 1
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000407524300005
%R 10.1016/j.intermet.2017.05.006
%U https://bib-pubdb1.desy.de/record/398565