New representatives of the W3Fe3C structure type

The constitution of the ternary system Fe–Ni–Si

“…1). For 50 at.% Si this section agrees very well with the section for 600 C by Borusevich et al [6] and confirms the extensive solubility of iron in NiSi 2 as well as of nickel in FeSi [6,7]. For <50 at.% Si, however, several so far unreported equilibria are found: (1) the phase Fe 5 Si 3 , which in the binary system Fe-Si is stable only above 825 C, is stabilized by nickel down to at least 700 C. (2) The phase Ni 3 Si 2 coexists with FeSi rather than being limited by a tie line between Ni 2 Si and NiSi to phase fields closely adjacent to the Ni-Si binary.…”

“…In the section FeSi 2 -NiSi 2 the extend of these solubilities is opposite. This behavior is in line with the rule mentioned by Wittman et al, which says that the solubility in cubic structures is higher than in phases crystallizing with other symmetry [6]. Frolov et al [8] prepared 13 alloys along the section Fe 2 Si-Ni 2 Si by quenching equilibrated alloys from 1100 C into water.…”

“…For <50 at.% Si, however, several so far unreported equilibria are found: (1) the phase Fe 5 Si 3 , which in the binary system Fe-Si is stable only above 825 C, is stabilized by nickel down to at least 700 C. (2) The phase Ni 3 Si 2 coexists with FeSi rather than being limited by a tie line between Ni 2 Si and NiSi to phase fields closely adjacent to the Ni-Si binary. [3] as well as of p-Fe 5 Ni 3 Si 2 observed by Borusevich et al [6].…”

“…The work of Takeda et al was confirmed almost entirely by Borusevich et al [6], who investigated Fe-Ni-Si phase equilibria at 600 C over the entire composition range using X-ray diffraction (XRD). These authors found the ternary phase at a composition Fe 5 Ni 3 Si 2 without extended homogeneity range.…”

Thermodynamic assessment of the Me-Co-C systems (Me=Ti, Ta, or Nb)

“…[27] Figure 2(b) shows the vertical section Co-TaC. müller, [23] Borusevich et al, [24] Argent, [28] and Borusevich et al [29] However, in this work, it has been modeled as a Figures 4(a) solution phase: Nb 2 (Nb,Co) 2 Co 2 C. The aim of the optimizapseudobinary system measured by several authors are presented in Table IV. Calculated data are also presented in the tion of M 6 C was to describe all the phase relationships present at equilibrium, according to Holleck and same table for comparison.…”