Residual Stress Relief and Redistribution of Welded Metals by Vibratory Stress Relaxation
In this study, research work on the effects of vibrational energy on the microstructure of welds and Charpy toughness is performed. The results show that vibration during welding exhibits positive effects on the microstructure constituent formation by reducing the amount and thickness of grain boundary ferrite and suppressing the formation of the Widmanstatten structure. And also due to the finer microstructure developed by the vibration, toughness value of the weld metal increases.
Changhee Lee, Jong-Bong Lee, Dong-Hwan Park and Suck-Joo Na
B.J. Kim et al., "Residual Stress Relief and Redistribution of Welded Metals by Vibratory Stress Relaxation", Materials Science Forum, Vols. 580-582, pp. 419-423, 2008