S. S. Babu, Ohio State University, Columbus, OH; J. M. Vitek, S. A. David, Oak Ridge National Laboratory, Oak Ridge, TN; M. Murugnanath, Nanyang Technological University, Singapore, Singapore

Summary: The thermomechanical response of single crystal superalloys during weld heating and cooling was evaluated for three commercial single crystal superalloys (Rene N5, PWA 1483, and CMSX4). Specific attention was paid to the loss of strength and ductility during on-heating tests and their recovery during on-cooling tests. These results are important for evaluating the cracking tendency in the weld metal and heat-affected-zones.