7
RawlingS(i975) x pure Fe + 0.53 wt.% Mn v 0.785 wt.%Mn: * 0.882 wt.% Mn OU8wt.%Mn
1 wt.% Mn
*e Fe-rich bcc phase in n of temperatures, corn-
Fig. 19 — The calculated Fe-N phase diagram assessed by Frisk,129' where N> gas is omitted but isobar lines are shown in dashed curves.
0/
Me4N
0.<
1400
0.7 0.8 0.9 Mn
isessed by Huang.'31'
\ 1 atroVj 0 atm \ J 02 atm
—JT-^X Hquid
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.
0/
Febcc fee
Fig. 21—Th, by omitting h
Finally, Mn-N systc therms, wh< when N2 g perature ar< 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-
nprimpnts at 000 °P mnlH nr*t he. arrminfwl fnr  Tt hctc
V.
Using th Fe-Mn-N s