Tensiones residuales en uniones soldadas por FSW en aluminio 7075-T651

Abstract

ResumenLas tensiones residuales pueden ser un aspecto de relevancia en la integridad estructural de componentes en servicio, pudiendo presentar una importante influencia sobre la vida a la fatiga, entre otros mecanismos de falla. El proceso de soldadura por fricción-agitación (FSW)

Effects of the friction stir welding process variants on residual stress

“…Peak residual stress increases when welding speed increases, due to relatively lower heat input, shorter heating time, higher temperature gradients, smaller HAZ, and less drop in YS [13][14][15]. Effects of rotating speed on residual stress have not reached a consensus yet [4,16]. Peel et al [15] and Woo et al [17] reported that the heat input generated by a tool shoulder, instead of a tool pin, was a critical factor which affected the longitudinal stresses in the FSW for a given tool geometry and plate thickness.…”