O. M. Barabash, J. M. Vitek, S. S. Babu, S. A. David, Oak Ridge National Laboratory, Oak Ridge, TN

Summary: The FL and its morphology determines the extent to which a perfect weld joint structure in the Ni-base single crystal forms. It is shown that by choosing proper optimal parameters of the weld (velocity and weld power) it is possible to avoid stray grains formation at the FL