The effect of heat treatment and alloying elements of copper and tin on the microstructure and mechanical properties of austempered ductile cast iron alloys is investigated. The austenitizing temperature of 890°C, the isothermal transformation (austempering) temperatures of 285, 335 and 375°C, and austempering times of 15, 30, 75 and 150 minutes are studied. The alloying elements of copper and ...

Abstract Short-term heat treatments of steels are used for tools and cutlery but also the surface treatment a variety other workpieces. If corrosion resistance is required, martensitic stainless like AISI 420L or 420MoV typically used. The influence short-term on different metastable states steel was examined reported in this article. Starting from defined microstructural state, investigated ex...

This study focused on the effects of different peak (austenitizing) temperatures (Tp) over martensite start temperature (Ms) and its influence final residual stresses after welding simulation. For this purpose, expansion coefficients obtained through physical (dilatometric) simulations a high-strength low-alloy steel were considered for three temperatures: 1300 °C, 1150 920 °C cooling rate 25 °...

Abstract Laser directed energy deposition (L-DED) was used to produce samples of the newly patented W360 hot work tool steel by Böhler. The process parameters were optimized obtain nearly fully dense through production and analysis single deposited tracks layers. Subsequently, bulk underwent a hardening heat treatment, consisting austenitizing, air quenching, tempering. analysed in as-built con...

Austempered ductile iron (ADI) has been proved to be an excellent material as it possesses attractive properties: high strength, ductility and toughness combined with good wear resistance and machinability. These properties can be achieved upon adequate heat treatment which yields the optimum microstructure for a given chemical composition. The heat treating of the ductile cast iron produces th...