Factorial Analysis of Welding Current Influence on Heat Affected Zone Hardness of Cast Iron, Aluminium, and Mild Steel Weldments Cooled in Palm Oil

Table 3

Variation of ((𝑖_𝛼/𝑖_𝛾)+(𝑖_𝛼/𝑖_𝛽)) with ((𝛼_𝑤/𝛾_𝑤)+(𝛼_𝑤/𝛽_𝑤))^1.1768.

𝑖𝛼/𝑖𝛾+𝑖𝛼/𝑖𝛽	(𝛼𝑤/𝛾𝑤+𝛼𝑤/𝛽𝑤)^1.1768
1.3333	1.3333