Viscosity and supercooling of Fe-Cr (≤40 at % Cr) melts

Камаева, Л. В.; Sterkhova, I. V.; Lad’yanov, V. I.

doi:10.1134/s0020168512030089

Cited by 16 publications

(7 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 3 shows the comparison between the evaluated viscosities and experimental data of Fe-Cr alloys. Two-side effect can also be observed, which is consistent with the measured results by Kamaeva et al,36) which are caused by a concentration change in the binding energy between the atoms determined by the geometric and compositional short-range order. Experimental data of Fe-Cr binary alloys measured by Sato et al 19) and Kobatake et al 9) were plotted in Fig.…”

Section: Evaluation For Viscosities Of Binary Alloys At 1 873 Ksupporting

confidence: 81%

“…Geometric models have been used extensively to predict the thermodynamic properties of ternary and multi-component systems from sub-binary systems. [36][37][38][39][40] Hu et al 41) first extended geometric models to predict the surface tensions of the Ag-Au-Cu ternary alloy without comparison between calculated and experimental results. Recently, geometrical models were successfully applied to predict the surface tension of the Ni 3 S 2 -FeS-Cu 2 S matte system and the calculated results were in good agreement with the experimental values.…”

Section: Methods To Calculate the Excess Activation Energies Of Ternamentioning

confidence: 99%

See 1 more Smart Citation

Evaluation Model for Viscosity of Fe–Ni–Cr Alloys Using Gibbs Free Energy of Mixing and Geometric Methods

Liu

Bai

2017

ISIJ Int.

View full text Add to dashboard Cite

Purpose of this investigation is to predict the viscosity of liquid Fe-Ni, Fe-Cr, Ni-Cr and Fe-Ni-Cr alloys at 1 873 K. The activation energies of binary alloys were calculated by the mixing Gibbs energies, and the proposed activation energies of pure Fe, Ni and Cr are 72 657, 66 721 and 74 517 J/mol. Geometric models (Kohler, Toop and Chou models) were used to predict the excess activation energies of ternary alloys. The iso-viscosity curves of Fe-Ni-Cr alloy are calculated by three geometric models (Kohler, Toop and Chou models) from sub-binary systems. Ni can decrease the viscosity in the whole range, while Fe has a twosided effect. Cr can result in the decrease of the viscosity at the Ni-rich corner and Fe-rich corner.

show abstract

Section: Evaluation For Viscosities Of Binary Alloys At 1 873 Ksupporting

confidence: 81%

Section: Methods To Calculate the Excess Activation Energies Of Ternamentioning

confidence: 99%

Evaluation Model for Viscosity of Fe–Ni–Cr Alloys Using Gibbs Free Energy of Mixing and Geometric Methods

Liu

Bai

2017

ISIJ Int.

View full text Add to dashboard Cite

show abstract

“…With increasing temperature of the melts, the concentration dependence does not change qualitatively. It can be assumed that the observed concentration behavior of the viscosity of Fe-Cr melts is due to the change of the binding energy between the atoms, which is deter mined by their geometric and compositional short range order [27]. In liquid iron, as shown in [28,29], short range ordering, intermediate between the body centered cubic (BCC) and face centered cubic (FCC) structures, occurs.…”

Section: Resultsmentioning

confidence: 99%

Study of viscosity of Fe-Cr melts containing 2 to 40 at % of chromium

2014

Self Cite

View full text Add to dashboard Cite

The temperature, time, and concentration dependences of viscosity ν of Fe-Cr melts containing 2 to 40 at % of chromium are studied. It is shown that the observed anomalies in viscosity polytherms in the first heating mode and the hysteresis of ν in subsequent cooling are due to the slow setting of thermodynamic and chemical equilibrium in the system of crucible-melt-atmosphere, which is shifted to higher tempera tures with increasing oxygen content in the alloy. The minimum and maximum of viscosity are observed at 5 and 12 at % of Cr, respectively; they are caused by a concentration change in the binding energy between the atoms, which is determined by the geometric and compositional short range order. The nonequilibrium state of the melts has no significant effect on the nature of their viscosity isotherms.

show abstract

“…A study of the dependence of kinematic viscosity on chromium content in the Fe–Cr melts showed that the viscosity isotherm is nonmonotonic with a minimum at 5 wt% and a maximum at 12 wt%. The increase in crystallization tendency was related to atoms’ geometric and chemical arrangement over short distances [ 25 ]. The viscosities of the Cr–Fe–Ni ternary system were studied at elevated temperatures, and it was found that the viscosities increased monotonically with increasing iron and chromium content [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Rheological Characteristics of Fe–C–Cr(Ni) Alloys

et al. 2023

View full text Add to dashboard Cite

The principal objective of this project was to investigate the rheological properties of Fe–C–Cr and Fe–C–Ni-based low-alloy steels using an Anton Paar high-temperature rotational viscometer up to 1550 °C. The emphasis was placed on determining the liquidus temperatures and evaluating the flow and viscosity curves and the temperature dependence of dynamic viscosity. All were studied depending on the change in the content of chromium (0.010–4.863 wt%), nickel (0.001–4.495 wt%), and carbon (0.043–1.563 wt%). It was shown that the dynamic viscosity decreases with increasing nickel content and increases with increasing carbon and chromium content. The experimental data of the flow curves were fitted using the Herschel–Bulkley model with a good agreement between the measured and calculated values. Characterization of the internal structure was performed by SEM and EDX analyses, confirming non-significant changes in the microstructure of the original and remelted samples. The phase composition of the selected samples was also determined using JMatPro 12.0 simulation software (Sente Software Ltd., Guildford, UK).

show abstract

Viscosity and supercooling of Fe-Cr (≤40 at % Cr) melts

Cited by 16 publications

References 8 publications

Evaluation Model for Viscosity of Fe–Ni–Cr Alloys Using Gibbs Free Energy of Mixing and Geometric Methods

Evaluation Model for Viscosity of Fe–Ni–Cr Alloys Using Gibbs Free Energy of Mixing and Geometric Methods

Study of viscosity of Fe-Cr melts containing 2 to 40 at % of chromium

Rheological Characteristics of Fe–C–Cr(Ni) Alloys

Contact Info

Product

Resources

About