Peening Increases Fatigue Strength Of Welded Aluminum

Author:  Nordmark, G.E.
Source:  Metal Progress, November 1963
Doc ID:  1963002
Year of Publication:  1963
Abstract:  
The fatigue strength of longitudinal butt welds in aluminum plates can be increased significantly by peening the weld and the heat affected zone. Because of surface compressive stresses introduced by peening, the improvement in fatigue life is greater than that produced by thermal stress relief.