The influence of nitrogen on the structure and properties of Fe-10Cr-N and Fe-10Cr-IMo-N steels after tempering in the temperature range of 650-750℃.In-situ heat treatment system using YAG laser sourcetempering process after quenching.Modelling and characterization of Mo{sub}2C precipitation and cementite dissolution during tempering of Fe-C-Mo martensitic steel.Inductive heating for hardening and tempering of steel rails.Rapid tempering and stress relief via high-speed convection heating.