Characterization of elastoplastic properties of dissimilar weld joint of A302/Cr5Mo using the inversion analysis

In this work, the microstructure, macro-and micro-mechanical properties of dissimilar A302/Cr5Mo were investigated by metallographic experiments, tensile and nanoindentation tests under room temperature. Based on inversion analysis, the plastic parameters of micro-domains (small regions across weld joint) were estimated, and the comparison with the experimental results on parent metal (PM) yielded a good agreement. Therefore, by means of this inversion analysis method, elastoplastic properties of PM, welding metal(WM), fine grain heat affected zone(FGHAZ), and coarse grain heat affected zone(CGHAZ) were obtained, which could provide a straightforward way of determining plastic properties on different regions across welded joints.