The effect of rotating and welding speed on the mechanical properties of AA6056 joints made by Friction Stir Welding are investigated. Different welds with rotating speed of 1000 and 1600 RPM and travel speeds of 230, 325 and 460 mm/min were produced. An ultrasonic (UT) non-destructive testing (NDT) procedure was applied to characterize the presence of possible weld defects prior to mechanical destructive testing. The joint mechanical properties were evaluated by means of static tensile tests and fatigue tests. Both static and fatigue properties show an appreciable improvement as both travel and rotating speed increase. However, in the case of maximum travel speed and maximum rotating speed, the welded specimens may display weldment defects that reduce the evaluated fatigue limit for such processing conditions. The correlation between process parameters and weldment static properties was carried out through an analysis of variance (ANOVA) of the data.
Optimization of Friction Stir Welds of Aluminium Alloys / Squillace, Antonino; Segreto, Tiziana; Prisco, Umberto; Teti, Roberto; G., Campanile. - (2006), pp. 247-252. [10.1016/B978-008045157-2/50047-X]
Optimization of Friction Stir Welds of Aluminium Alloys
SQUILLACE, ANTONINO;SEGRETO, Tiziana;PRISCO, UMBERTO;TETI, ROBERTO;
2006
Abstract
The effect of rotating and welding speed on the mechanical properties of AA6056 joints made by Friction Stir Welding are investigated. Different welds with rotating speed of 1000 and 1600 RPM and travel speeds of 230, 325 and 460 mm/min were produced. An ultrasonic (UT) non-destructive testing (NDT) procedure was applied to characterize the presence of possible weld defects prior to mechanical destructive testing. The joint mechanical properties were evaluated by means of static tensile tests and fatigue tests. Both static and fatigue properties show an appreciable improvement as both travel and rotating speed increase. However, in the case of maximum travel speed and maximum rotating speed, the welded specimens may display weldment defects that reduce the evaluated fatigue limit for such processing conditions. The correlation between process parameters and weldment static properties was carried out through an analysis of variance (ANOVA) of the data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
