郝珊, 李国忠, 王福明, et al. Thermodynamic Calculation and Analysis on Precipitated Phases in Heat-Resistant Steel T91[J]. Special Steel, 2008, 29(3): 16-18.DOI:
and MX existing in heat-resistant steel T91 (0.09C
8. 57Cr
0.90Mo
0.19V
0. 08Nb
0.04N) at 600 ~ 1 600 °C have been calculated by Thermo-Calc calculation software. Results show that the main equilibrium precipitated phases in steel T91 at 600 ~ 1 600 ℃ are M23C6 and MX
the initial precipitation temperature for M
23
C
6
is 860 °C and that for MX is 1 200℃ . In MX phase the rich Nb carbonitrides first precipitate then the rich V carbonitrides precipitate. With increasing Nb
V or N
the amount of MX and its equilibrium initial precipitated temperature increases