Investigation of the TIG Welding Process for Joining AA6082 Alloy Using Grey Relational Analysis

Table 2

Experimental results.

Welding current (A)	Travel speed (mm/min)	Gas flow rate (lit/min)	Tensile strength (MPa)	Hardness (HV)
130	237	13	108	66.5
130	200	14	94	80
130	173	15	132	73.5
140	237	14	203	65
140	200	15	200	67.5
140	173	13	150	75
150	237	15	193	72
150	200	13	194	70
150	173	14	208	56.9