%0 conference paper %@ %A Liu, J., Staron, P., Schnubel, D., Schell, N., Huber, N., Kashaev, N. %D 2014 %J Proceedings of 29th Congress of the International Council of the Aeronautical Science, ICAS 2014 %P 0638 %T The Cooling Gradient and Microstructure Control In Laser Beam Welded TiAl Alloy Assisted by Temperature Field Simulation %U %X scanning electron microscope and high-energy X-ray diffraction. It is found out that by careful control of the cooling rate, the residual stresses are largely removed in the weld seam and the microstructure is improved. Tensile tests are carried out for the comparison of the nonheated and the heat treated joints. It is proved that the mechanical properties of the joints are balanced by the careful temperature control.