%0 journal article
%@ 1438-1656
%A Liu, J., Ventzke, V., Staron, P., Schell, N., Kashaev, N., Huber, N.

%D 2012
%J Advanced Engineering Materials
%N 10
%P 923-927 
%R doi:10.1002/adem.201200113
%T Investigation of In Situ and Conventional Post-Weld Heat Treatments on Dual-Laser-Beam-Welded Gamma-TiAl-Based Alloy
%U https://doi.org/10.1002/adem.201200113
10 
%X This paper describes a way to improve the microstructure and mechanical properties of welding seams by in situ and conventional post-weld heat treatments for laser beam welding of the Ti–45Al–5Nb–0.2C–0.2B alloy. The seams are crack-free with reduced longitudinal residual stress and higher elongation to fraction after post-weld heat treatment. The welding zone consists of α2 after welding, transforms to a massive γ during in situ post-weld heat treatment, and finally forms a convoluted microstructure after conventional heating. The phase composition across the welding zone is discussed.