Effect of Friction Stir Processing on Gas Tungsten Arc-Welded and Friction Stir-Welded 5083-H111 Aluminium Alloy Joints

Table 5

Grain sizes measured.

Technique	Diameter (μm)				Standard deviation
	1	2	3	Mean values
Base	18.63	15.63	17.16	17.14	1.50
FSW	8.57	8.20	9.20	8.657	0.362
FSP-FSW	4.74	4.44	4.68	4.62	0.127
GTAW	10.96	10.30	11.08	10.78	0.249
FSP-GTAW	7.010	7.520	7.000	7.177	0.125