Influence of Friction Stir Welding on Mechanical Properties of Butt Joints of AZ61 Magnesium Alloy

Table 2

Welding parameters satisfying ratios 2 and 3.

Heat input () ratio	Welding condition	Rotational speed (ω) [rpm]	Welding speed () [mm/min]	Axial force [kN]	Plunge depth [mm]
	(a)	400	200	8.6	4.8
	(b)	600	300
	(c)	800	400
	(d)	1000	500
	(e)	600	200
	(f)	900	300
	(g)	1200	400
	(h)	1500	500