Fracture mechanisms in sintered steels with 3.5%(wt.) Mo

Sintered (Powder Metallurgy, P/M) materials usually show brittle behavior and for this reason their toughness is low compared with wrought materials. The impact toughness behavior of different P/M steels (Fe-3.5% Mo pre-alloyed powders as base material) is presented and microstructural and fractographical results are used to amplify the data.