Abstract
Keywords: powder metallurgy, steel sheets, mechanical properties, thermochemical treatments, carburizing, annealing.
The mechanical property values of sintered steels obtained by powder metallurgy are presented in this work. This properties result by annealing after quenching thermal treatment. The sintered steels are based on iron powder type Distaloy AE (Hoganas-Sweden) with different carbon concentrations addings (< 1%C). The quenching and annealing treatments were performed in a thermal and thermochemical treatment fuenace - Pattent No. 101496 O.S.I.M. (Bucharest - Romanian Pattent Office). The experimental session consist in quenching treatment of powders by heating at 850-900°C, followed by annealing treatments (heating at 300-500°C) and cooling with or without mechanical stearing by charge rotation in furnace atmosphere.