Rafted microstructure has been observed in specific areas of a fully heat-treated blade at the end of the manufacturing process. The solution heat-treated blade is believed to exhibit a residual stresses variation across the airfoil induced earlier in the manifacturing process. These stresses would have been then relaxed during the remaining manufacturing process, causing the rafting of the microstructure. The objective is to measure the solution heat-treated blade to characterise its residual stress state and the the fully heat-treated blade for the relaxation of these stresses. A reconstructed 3D image of the blade will be included to the digitized model to remove the possibility of spurious strains arising from a lack of complete immersion of the sampling gauge volume. Misfit strains will be characterised and the global residual stresses will be calculated using a compositite model.