International Electron Beam Welding Conference : lectures of the 4th IEBW Conference taking place in Aachen on March 21-22, 2017 / organized by German Welding Society (DVS), Düsseldorf, International Institute of Welding (IIW), Villepinte, American Welding Society (AWS), Miami. Düsseldorf : DVS Media GmbH, © 2017