Microstructure and Mechanical Properties of Laser Additive Manufactured H13 Tool Steel

Hot working tool steel (AISI H13) is one of the most common die materials used in casting industries. A suffers from damage due to friction and wear during its lifetime. Therefore, various methods have been developed for repair save costs manufacture a new one. great benefit laser additive manufacturing (cladding) 3D high production rate with minimal influence thermal stresses comparison conventional arc methods. Residual are important factors that performance product, especially fatigue life. aim this contribution correlate wide range results multilayer cladding H13 steel. X-ray neutron diffraction experiments were performed fully describe residual generated cladding. Additionally, in-situ tensile testing inside scanning electron microscope observe microstructural changes deformation. The compared local hardness measurements. Because does not achieve adequate accuracy, effect necessary post-grinding was investigated. According findings, overlapping beads their mutual tempering significantly affect mechanical properties. Further, outer surface layer, which showed cracks, removed by grinding compressive described on ground surface.