Laser Multi-Pass Narrow-Gap Welding – A Promising Technology for Joining Thick-Walled Components of Future Power PlantsBenjamin Keßler, Berndt Brenner, Dirk Dittrich, Jens Standfuß, Eckhard Beyer, Christoph Leyens and Gerhard MaierMATEC Web Conf., 269 (2019) 02011DOI: https://doi.org/10.1051/matecconf/201926902011