Mechanical treatment of welded and brazed joints

Author:  V. Wesling, A. Schram, K. Treutler
Source:  Conf Proc 2014: ICSP-12 Goslar, Germany (pgs.179-184)
Doc ID:  2014072
Year of Publication:  2014
Abstract:  
The study deals with the mechanical treatment of joints of different materials on steel and aluminium. The treatment is a high frequency peening process, which should improve the fatigue strength by implementation of residual compressive stresses and by reducing the notch effects in the region of the fusion line. The studies on welded thin sheets of a self-hardening hard and a precipitation hardening aluminium alloy, as well as welded joints madeof cold rolled fine grain steels with large thickness differences will be reported. Furthermore, the effects on the properties of brazed sheet metal joints will be presented. It will be shown that mechanical treatment-processes have the capability, depending on the joining mechanisms, to extend the life-cycle of joints.