Repair welding of nickel superalloys is being investigated at Cranfield University to determine repair techniques which minimise liquation and post-weld heat treatment cracking in turbine blade repairs. This study aims to understand the relationship between both the weld bead shape, and heat input on the three dimensional residual stresses state in the heat affected zone of the repair welds. This will be correlated with the occurrence of liquation cracking, aiding our understanding of the mechanism that cause this phenomenon.