Research on Welding Residual Stresses (Report 6)

Change in Residual Stresses by Natural Aging

Abstract

The welding residual stresses at the Point 1 and 4 in the mild steel rectangular specimens, which had a weld bead along one edge as shown in Fig. 1, were measured seven times between one and 180 days after welding by the X-ray diffraction method.
The relaxation of residual stresses by natural-aging was not almost found from the results of the experiment contrary to the expectations.
The results are shown in Fig. 2 and 3.