TY - JOUR
T1 - Application of phase equilibrium analysis in prepartion of Nb-Si based ultra-high temperature alloys
AU - Geng, Tai
AU - Li, Chang Rong
AU - Guo, Cui Ping
AU - Du, Zhen Min
AU - Liu, Miao
AU - Zhao, Xin Qing
PY - 2011/2
Y1 - 2011/2
N2 - On the basis of phase equilibrium calculation, the solidification paths of Nb-Si-Mo ternary alloys with different compositions were simulated by Scheil-Guilliver model. In the meantime, according to the liquidus projections and phase equilibrium on the Nb-M rich side of the Nb-Si-M (M=Ti, Mo, W, Al, Cr, B, Hf) ternary system, the effects of alloying elements on stability of phase Nb3Si and the region of the two-phase Nbss+Nb5Si3 were analyzed. The calculated results are consistent well with the microstructure observed by experiments, indicating that the phase equilibrium analysis is helpful to composition design, solidification simulation and microstructure control of the Nb-Si-based ultra-high temperature resistent alloys.
AB - On the basis of phase equilibrium calculation, the solidification paths of Nb-Si-Mo ternary alloys with different compositions were simulated by Scheil-Guilliver model. In the meantime, according to the liquidus projections and phase equilibrium on the Nb-M rich side of the Nb-Si-M (M=Ti, Mo, W, Al, Cr, B, Hf) ternary system, the effects of alloying elements on stability of phase Nb3Si and the region of the two-phase Nbss+Nb5Si3 were analyzed. The calculated results are consistent well with the microstructure observed by experiments, indicating that the phase equilibrium analysis is helpful to composition design, solidification simulation and microstructure control of the Nb-Si-based ultra-high temperature resistent alloys.
KW - Microstructure control
KW - Nb-Si based superalloy
KW - Phase equilibrium analysis
KW - Solidification simulation
UR - https://www.scopus.com/pages/publications/79953075603
M3 - 文章
AN - SCOPUS:79953075603
SN - 1009-6264
VL - 32
SP - 157
EP - 161
JO - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
JF - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
IS - 2
ER -