Microfriction Stir Welding of Aluminium Using ABB IRB 1410 Robot

Table 5

Microhardness of welded samples.

Sample no	Hardness (Hv)
1	42.3
2	42
3	42
4	41.3
5	42.6
6	42.3
7	43
8	43.3
9	43.3