Material and Residual Stress Considerations Associated with the Autofrettage of Weld Clad Components

The data provided in this dataset relates to the development and validation of a fatigue-resistant cladding concept. Residual stresses obtained in two weld clad cylinders using two different materials have been experimentally obtained and compared with residual stresses obtained through simulation of the weld cladding process. The complexity of capturing material behaviour in the simulation model required an experimental programme to obtain temperature-dependent thermal and mechanical properties for input into the simulation model. It was found that a low allow carbon steel 4330 cylinder weld clad with Inconel 625 resulted in tensile residual stresses in the clad layer, undesirable from a fatigue point of view. Therefore autofrettage of the weld clad cylinder was investigated as a means of transforming these stresses into compressive residual stresses. Simulation studies have shown that this is successfully achieved.
The dataset provides residual stress distributions obtained through simulation, the comparison of residual stress from experimental measurements and simulation, the effects of autofrettage on the residual stress distribution, the variation of thermal expansion coefficient with temperature and the effects of varying coefficient of thermal expansion values on resulting residual stress.
Experimental data was obtained using the incremental centre hole drilling method and the contour method. The contour method measurements are courtesy of the Open University. Simulation data was obtained through the axisymmetric, thermal transient analysis of the weld cladding process in Abaqus. Experimental coefficient of thermal expansion data was obtained using a dilatometer.
The Excel spreadsheet shows in each tab the data utilised in creating the chart, shown also in each tab. The CSV files present the same data.