Melting equilibria in the iron‐rich corner of the Fe‐Ni‐Mo system

Abstract

Isothermal holding tests were carried out in the Fe‐Ni‐Mo system in the two‐phase region between the liquidus (melt) and the solidus (crystal). The δ and γ liquidus surfaces in the iron‐rich corner of the Fe‐Ni‐Fe3Mo2‐NiMo subsystem, as well as the position of the peritectic line situated between them, could be very accurately established by the experimentally determined isotherms. Based on these results and on the known liquidus lines in the three boundary binary systems, as well as on the known concentration fields of the Fe3Mo2‐NiMo solid solutions, the melting equilibria could be developed with sufficient accuracy in the entire subsystem.

Simulation of the Solidification and Microstructural Evolution in Steel Casting Processes Using the InterDendritic Solidification Tool

“…From all phase‐change temperatures, the liquidus temperature can be most accurately measured. Table 2 and 3 show the average deviation () obtained between the experimental [ 22,37–112 ] and calculated liquidus temperatures for 283 ternary Fe–X–C alloys (Table 2), 274 ternary Fe–Cr–X and Fe–Ni–X alloys (Table 2), 55 ternary Fe–X–Y alloys (Table 2 ), as well as 410 low‐alloyed (143) and high‐alloyed (267) steels (Table 3). The average deviations in the predicted liquidus temperatures are 5.6 °C for carbon alloys, 3.9 °C for Cr and Ni alloys, and 11.8 °C for other alloys (Table 2), while the average deviation for the low‐ and high‐alloyed steels was 3.2 °C (see Table 3).…”