Phase equilibria in the Al–C–Ni–W quaternary system

Experimental investigation and thermodynamic assessment of the C–Co–Fe–Ni–W system

“…Calculated vertical section of the C-Ni-W system at 20 wt.% Ni according to the present work (solid lines) and literature data[36] (dashed lines), in comparison with the present experimental results.…”

“…Fig. 6 shows the calculated vertical section of the C-Ni-W system at 20 wt.% Ni using the thermodynamic parameters obtained from both the present assessment and Wang et al [36], together with the present experimental result. As it is seen, the present calculation can reach a better fit between the calculated and experimental transformation temperatures of both the free-C and M 6 C-containing C-Ni-W alloys.…”

“…Secondly, the assessment was conducted on the C-Fe-W, C-Co-W, and C-Ni-W ternary sub-systems. It was found that the thermodynamic description of the C-Co-W system [28] can well reproduce the present DSC results and therefore were directly adopted in the subsequent modelling, while the ternary parameters [30] and C-Ni-W [36] systems were adjusted to obtain a good fit between the calculated and experimental values. Thirdly, the assessment was extended to the C-Fe-Ni-W quaternary system.…”

“…Firstly, the thermodynamic parameters of sub-systems from the following literature, C-Co [18], C-Fe [23], C-Ni [24], C-W [25], Co-Fe [26], Co-Ni [27], Co-W [28], Fe-Ni [29], Fe-W [30], Ni-W [31], C-Co-Fe [32], C-Co-Ni [33], C-Co-W [28], C-Fe-Ni [34], C-Fe-W [30], Co-Fe-W [35], C-Ni-W [36], Co-Ni-W [12], Fe-Ni-W [37], C-Co-Fe-W [12] C-Co-Ni-W [12] and C-Fe-Ni-W [11], were collected to establish a preliminary thermodynamic database. Secondly, the assessment was conducted on the C-Fe-W, C-Co-W, and C-Ni-W ternary sub-systems.…”

Influence of carbon on the formation of γ/γ′ microstructure and κ-phase in the WC/Co–Ni–Al–W system: ab initio calculations and experimental studies

“…But from the ab initio calculated formation enthalpies, one could reason that j is not formed since c' is more stable [3]. Also, Ni 3 Al seems to dissolve high amounts of carbon with up to 10 at% [14,15].…”