Abstract
The solubility of nitrogen in Fe-V,-Si,Cu,-Ni and-Cr-Ni molten alloys was measured at 1600°, under the pressure of 160 mmHg and 760 mmHg and from the results obtained the effect of alloying elements on the activity coeff.of nitrogen in molten iron was calculated by the following relation : logf_N=logC_N^O-logC_N
At low V-concentration, the solubility of nitrogen was given by Sievert’s law approximately.
In Fe-Ni-Cr molten metal, the activity coeff.of nitrogen can be calculated by fN=fNCr×fNNi from the known fNCr and fNNi of binary alloy.
