Liquidus and solidus temperatures and latent heats of melting of steels

Kalup, Aleš; Smetana, Bedřich; Kawuloková, Monika; Zlá, Simona; Francová, Hana; Dostál, Petr; Waloszková, Kateřina; Waloszková, Lenka; Dobrovská, Jana

doi:10.1007/s10973-016-5942-4

Cited by 19 publications

(3 citation statements)

References 25 publications

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“…A possible explanation for this might be that the optical method considers the temperature of the liquid as that at which the sample assumes a perfect drop shape. It is worth noting that determining liquid temperatures at high temperatures entails several challenges, including those relating to the experimental setup, experimental conditions (heating rate, sample weight), or changes in the chemical composition of the samples during heating (oxidation, decarburization) [ 30 , 31 , 32 ]. As for the values calculated with ThermoCalc 2019a software (Thermo-Calc Software, Stockholm, Sweden), one must consider certain simplifications that the software operates with, e.g., the absence of certain elements, equilibrium conditions, and others.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2023

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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).

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Section: Resultsmentioning

confidence: 99%

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

et al. 2023

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“…Modern economical production and processing of steel needs accurate phase transformation temperatures data to keep better control of the production metallurgy, especially the primary and secondary metallurgy processes, optimal setting of casting and solidification conditions, thermal and chemical homogenization of the melt [6]. Also, the phase transformation temperatures of steels are critical parameters for proper adjustment of other mathematical models (physical or numerical) that often uses such an input data for e.g.…”

Section: Introductionmentioning

confidence: 99%

Prediction and measurement of selected phase transformation temperatures of steels

Martiník

Smetana

Dobrovská

et al. 2017

J min metall B Metall

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The study deals with precise determination of phase transformation temperatures of steel. A series of experimental measurements were carried out by Differential Thermal Analysis (DTA) and Direct Thermal Analysis (TA) to obtain temperatures very close to the equilibrium temperatures. There are presented results from the high temperatures region, above 1000 °C, with focus on the solidus temperatures (T S), peritectic transition (T P) and liquidus (T L) of multicomponent steels. The data obtained were verified by statistical evaluation and compared with computational thermodynamic and empirical calculations. The calculations were performed using 15 empirical equations obtained by literature research (10 for T L and 5 for T S), as well as by software InterDendritic Solidification (IDS) and Thermo-Calc (2015b, TCFE8; TC). It was verified that both thermo-analytical methods used are set correctly; the results are reproducible, comparable and close to equilibrium state.

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“…Examinations of steel phase transformations conducted at a high temperature range allow us to determine the characteristic temperatures -the solidus and the liquidus, which are both important for planning the continuous casting process technology [4][5][6]. Numerical simulation of metallurgical processes, at which the crucial physical phenomena like solidification extends in high temperature region, requires reliable information about latent heat of phase transformations and temperature dependence of the specific heat [7].…”

Section: Introductionmentioning

confidence: 99%

Investigations of Temperatures of Phase Transformations of Low-Alloyed Reinforcing Steel within the Heat Treatment Temperature Range

Kargul

2017

Archives of Metallurgy and Materials

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The paper presents the results of DSC analysis of steel B500SP produced in the process of continuous casting, which is intended for the production reinforcement rods with high ductility. Studies were carried out in the temperature range below 1000°C in a protective atmosphere of helium during samples heating program. The main objective of the study was to determine the temperature range of austenite structure formation during heating. As a result of performed experiments: Ac 1s , Ac 1f -temperatures of the beginning and finish of the eutectoid transformation, Ac 2 -Curie temperature of the ferrite magnetic transformation and the temperature Ac 3 of transformation of proeutectoid ferrite into austenite were elaborated. Experimental determination of phase transformations temperatures of steel B500SP has great importance for production technology of reinforcement rods, because good mechanical properties of rods are formed by the special thermal treatment in Tempcore process.

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Liquidus and solidus temperatures and latent heats of melting of steels

Cited by 19 publications

References 25 publications

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

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

Prediction and measurement of selected phase transformation temperatures of steels

Investigations of Temperatures of Phase Transformations of Low-Alloyed Reinforcing Steel within the Heat Treatment Temperature Range

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