The Effect of Grinding on the Low-cycle Fatigue Behavior of 5086-H116 & 5456-H117 Aluminum Alloy Weldments

Author:  Macco, John G
Source:  Naval Ship Research and Development Center
Doc ID:  1973019
Year of Publication:  1973
Abstract:  
Low-cycle flexural fatigue tests in air and in sea-water environments were conducted on 1-inch-thick 5086-H116 and 5456-H117 aluminum alloy weldments in the ground condition. The results indicate that fatigue life is unaffected by the presence of sea water and that grinding significantly enhances fatigue behavior provided that the ground surfaces are free of porosity. Work on this program is continuing to determine the effects of mechanical peening and postweld-arcmelting on the fatigue behavior of aluminum weldments.