Effect of Friction Stir Welding on the Mechanical and Microstructural Behaviour of AA7075 Aluminium Alloy

Table 2

Experimental runs and its results.

S.No	Tilt angle	Tool rotation (rpm)	Tool feed rate (mm/min)	Axial load	Tensile strength (MPa)	Microhardness (HV)
1	0	500	16	10	248	63
2	0	500	20	15	311	68
3	0	500	24	20	272	71
4	0	600	16	10	299	59
5	0	600	20	15	342	66
6	0	600	24	20	322	70
7	0	700	16	15	287	64
8	0	700	20	20	261	68
9	0	700	24	10	339	72
10	1.5	500	16	20	304	43
11	1.5	500	20	10	352	48
12	1.5	500	24	15	278	47
13	1.5	600	16	15	255	51
14	1.5	600	20	20	286	39
15	1.5	600	24	10	322	55
16	1.5	700	16	20	347	44
17	1.5	700	20	10	326	42
18	1.5	700	24	15	303	49