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The dependence of properties of sintered Fe–Mn steels, produced with commercial ferromanganese and ferrosilicon, on processing parameters are examined. By controlling the local “microclimate”, using a semiclosed container/getter/activator combination, Fe-3.2Mn-1.4Si-0.5C steel was successfully sintered in flowing technical nitrogen or 95 vol.% N 2 /5 vol.% H 2  furnace atmosphere. The getters were naphthalene and ferromanganese. The necessary reducing reactions involving manganese vapour and nascent carbon with water vapour and manganese and silicon oxides took place in the dry “microatmosphere” within and around the specimens. The resultant average values of ultimate tensile strength, 0.2% offset yield stress and elongation were 871 MPa, 561 MPa, and 2.21%, respectively, not significantly different from literature values for steels produced on the basis of Fe–Si–Mn ferroalloys sintered in dry hydrogen.

Microatmosphere sintering of Fe-3.2Mn-1.5Si-0.5C steel in flowing technical nitrogen