Effect of heat treatment on microstructure and mechanical properties of laser melting deposited 1Cr12Ni2WMoVNb steel

▶ Solution treatment can induce columnar-to-equiaxed grain transition. ▶ ILHAZ and interdendritic phases can be eliminated by proper solution treatment. ▶ Microstructure of quenched-and-tempered steel is similar to wrought counterpart. ▶ Mechanical properties of the steel are comparable to the wrought counterpart.