Microstructure and properties of die steel fabricated by WAAM using H13 wire

The thin-walled parts with dimension of 260 mm length and 150 mm height were fabricated by wire and arc additive manufacture (WAAM) using H13 wire and Metal-Inert Gas Welding (MIG). The microstructure, hardness, mechanical properties of the parts was studied. It was found that the parts well formed, no clear delineations were observed between layers, different thermal history result in a variety of microstructures. The hardness of the parts was...