Raw!ings(i975j x pure Fe + 0.53wt.%Mn y 0.785 wt.%Mn * 0882 wt.%Mn
1 wt.% Mn
'he Fe-rich bcc phase in n of temperatures, corn-
Fig. 19—The calculated Fe-N phase diagram assessed by Frisk,'19' where N; gas is omitted but isobar lines are shown in dashed curves.
0.<
Fe bcc
0.«
Fe bcc fee
0.7 0.8 0.9 Mn
;sessed by Huang.
I3IJ
n
Fig. 20—The calculated Mn-N phase diagram assessed by Qiu and Fernandez Guillermet,1301 where N2 gas is omitted but isobar lines are shown in dashed curves.
Febcc fee
Fig. 21—Th. by omitting ř-
Finally, Mn-N sysK therms, wh< when N2 g perature an line of 1 a informatior sure for pn
liquid forms in
alculated by in-can be referred
maximum solubility of Fe in Mn4N increases with temperature until about 710 °C and then decreases on further heating until it transforms into the hep phase. The ex-
nprim<=>nf<; at QOO °P rnnlH nrtt hp ftrrrmnffH fnr  ft H^c
V.
Using th Fe-Mn-N s.