Identification of Defect Prone Peritectic Steel Grades by Analyzing High-Temperature Phase Transformations

Presoly, Peter; Pierer, Robert; Bernhard, Christian

doi:10.1007/s11661-013-1671-5

Cited by 90 publications

(54 citation statements)

References 18 publications

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“…The temperature range of heat treatment operations is selected based on the phase transformation temperature which mostly depends on the carbon content in steel. In the case of multicomponent systems also other alloying elements should be taken in consideration because they have influence on the characteristic temperatures in the system [12].…”

Section: Samplesmentioning

confidence: 99%

“…Temperatures of phase transformations as well as phase diagrams can be determined using programs dedicated to thermodynamic calculations, which have recently become popular tools supporting research in the field of phase transformations [12][13][14]. FactSage is one of them.…”

Section: Samplesmentioning

confidence: 99%

“…Table 2 presents sequence and temperatures of individual phase transformations which were computed for the multicomponent pseudo binary system. Thermodynamic calculations in FactSage are based upon determining the equilibrium state between the phases for specific parameters of the state using Calphad method [12,15]. Calculations like these allow us quickly determine the characteristic temperatures of transformations for complex multicomponent systems.…”

Section: Samplesmentioning

confidence: 99%

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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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Section: Samplesmentioning

confidence: 99%

Section: Samplesmentioning

confidence: 99%

Section: Samplesmentioning

confidence: 99%

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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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“…1. The effect of alloying elements on the position of the peritectic transformation in steels is more precisely described in the literature [1].…”

Section: Introductionmentioning

confidence: 99%

“…Both these techniques enable determination of temperature of phase transitions, latent heats and (in case of DSC) specific heat [1,[12][13][14]. However, peritectic steels are highly reactive materials at elevated temperatures [1]; thus, a great care must be taken during measurements to avoid the decarburization and oxidation of steel samples [15,16].…”

Section: Introductionmentioning

confidence: 99%

Differential scanning calorimetry study of peritectic steel grades

Wielgosz

Kargul

2014

J Therm Anal Calorim

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Differential scanning calorimetric (DSC) measurements to identify high-temperature phase transitions of two non-alloyed peritectic steel grades are presented and discussed in this paper. Netzsch STA 449 F3 Jupiter thermal analyser device was used to perform DSC experiments. Measurements of temperatures of phase transformations at the heating and cooling rates of 5 and 20°C min -1 were conducted. Measurement conditions for determining the temperature of peritectic transition in two real steels grades were described. The influence of measurement conditions on the results of DSC analysis was discussed. It was found that heating rate slightly affects the temperature of peritectic phase transition. Experimentally obtained solidus and liquidus temperatures are in good agreement with values derived by numerical calculations using FactSage software with database developed by Scientific Group Thermodata Europe. New original data (phase-transition temperatures) were obtained in this study, which may, however, be used for modelling of the solidification behaviour of peritectic steel grades.

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Microsegregation Model with Local Equilibrium Partition Coefficients During Solidification of Steels

You

Bernhard

Wieser

et al. 2015

steel research int.

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A microsegregation model with local partition coefficients and temperature-dependent diffusion coefficients based on the model of Ohnaka (I. Ohnaka, Trans. Iron Steel Ins. Jpn. 1986Jpn. , 26, 1045) is proposed. In this model, multicomponent alloy effects and precipitations are considered, and the peritectic reaction can be indicated using the thermodynamic library ChemApp. The proposed model is validated by comparing the results to other models from the literature and to measured data. Local partition coefficients are calculated, and their significant influence on microsegregation prediction is shown. The characteristic temperatures determined using the proposed model are in good agreement with measured values.

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Identification of Defect Prone Peritectic Steel Grades by Analyzing High-Temperature Phase Transformations

Cited by 90 publications

References 18 publications

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

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

Differential scanning calorimetry study of peritectic steel grades

Microsegregation Model with Local Equilibrium Partition Coefficients During Solidification of Steels

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