Springback of Friction Stir Welded Sheets Made of Aluminium Grades during V-Bending: An Experimental Study

Figure 7

Influence of shoulder diameter on (a) weld yield strength, (b) weld Young’s modulus, (c) yield strength to Young’s modulus ratio, and (d) weld strain hardening exponent; RS: rotational speed (in rpm); WS: welding speed (in mm/min).

(a)

(b)

(c)

(d)