碳溶解度平衡实验表明，1400℃时Mn－Fe合金熔体在全部浓度范围内碳溶解度可用下式计算：XC=0.1886+0.1119XMn或XC=0.2703－0.1006XFe.通过热力学推导和计算，得到如下热力学数据：（1）Fe－C系，（2）Fe－Mn－C系，
The solubility of carbon in Mn-Fe alloy melts was measured experimentally at 1400 ℃. The solubility of carbon in Mn-Fe alloy melts (from pure Mn to pure Fe) can be cal-culated with following formula: Xc=0.1886+0.1 119XMn or XC=0.2703-0.1006XFe. By thermodynamical derivation and calculation, some thermodynamical data were obtained as follows: 1) in Fe-C and Fe-Mn-C systems, lnγ℃= -0.033, ε= 9.02, eg= 0.1534, in Mn-C and Mn-Fe-C systems,
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