Structure and properties of powder metallurgy phosphorous steels

The effect of structure on the Properties of powder metallurgy steels alloy ed with phosphorus was investigated Initial mixtures were prepared by the t raditional method and by mechanical alloying. Mechanical alloying decreased the sintering temperature, increased the density, and improved the propert ies thanks to the formation of dispersed phases, a high-density cellular di slocation distribution, and the frapping of phosphorus atoms by the disloca tion atmosphere, which prevented coagulation of the phosphides. If was esta blished that when closed porosity is formed, the changes in mechanical prop erties and fracture resistance do not agree.