Simulated calculation and analysis on equilibrium precipitated phases γ

M

6

C

P

μ and non-equilibrium solidification of alloy C-276(%;≤0.01C

14.5～16.5Cr

15.0~17.0Mo

≤2.5Co

4.0~7.0Fe

balance Ni)have been carried by using Thermo-Calc thermodynamic calculation software. Results show that during solidification of alloy the segregation of Mo and Cr is serious;and with increasing Cr content in alloy

the Cr content in matrix y phase increases obviously

while the Mo content in y phase decreases markedly; but the change of Mo content in alloy nearly hasn't infuence on Mo and Cr content in y phase

because with increasing initial Cr and Mo

the precipitated amount of P phase increases

and the Mo is main element of P phase

with increasing the amount of P phase

the Mo content in matrix γ phase decreases.