Experimental study and thermodynamic modelling of the B-Fe-Mn ternary system

Repovský, Peter; Homolová, Viera; Čiripová, Lucia; Kroupa, Aleš; Zemanová, Adéla

doi:10.1016/j.calphad.2016.10.002

Cited by 7 publications

(14 citation statements)

References 18 publications

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“…The Fe-B-X alloys were prepared from high-purity powders (Fe-99.98 % or 99.96 %, B-99.95 %, C-99.90 %, Cr-99.99%, Mn-99.98 % or 99.95 %, V-99.80 %, W-99.90 %). Details on the production process can be found in published studies on phase equilibria and/or thermodynamic modelling studies [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ]. The mixed powders were pressed into cylindric compacts using a uniaxial pressing machine.…”

Section: Methodsmentioning

confidence: 99%

“…In general, the solubility of tungsten (W) and carbon (C) in iron borides is low, while the solubility of chromium (Cr) reaches up to 15 at.% for Fe 2 B phase, and 16 at.% for FeB boride at 1353 K [ 38 ]. Manganese (Mn) can completely replace iron in these borides [ 39 ], therefore it is interesting to study the influence of these elements on borides mechanical properties. One equilibrated quaternary Fe-B-Mn-V alloy was also used in order to assess the combined effect of Mn and V as alloying elements.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of the Third Element on Nano-Mechanical Properties of Iron Borides FeB and Fe2B Formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) Alloys

et al. 2020

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In this study, the influence of alloying elements on the mechanical properties of iron borides FeB and Fe2B formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) alloys were evaluated using instrumented indentation measurement. The microstructural characterization of the alloys was performed by means of X-ray diffraction and scanning electron microscope equipped with an energy dispersive X-ray analyzer. The fraction of the phases present in the alloys was determined either by the lever rule or by image analysis. The hardest and stiffest FeB formed in Fe-B-X (X = C, Cr, Mn) alloys was observed in the Fe-B-Cr alloys, where indentation hardness of HIT = 26.9 ± 1.4 GPa and indentation modulus of EIT = 486 ± 22 GPa were determined. The highest hardness of Fe2B was determined in the presence of tungsten as an alloying element, HIT = 20.8 ± 0.9 GPa. The lowest indentation hardness is measured in manganese alloyed FeB and Fe2B. In both FeB and Fe2B, an indentation size effect was observed, showing a decrease of hardness with increasing indentation depth.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of the Third Element on Nano-Mechanical Properties of Iron Borides FeB and Fe2B Formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) Alloys

et al. 2020

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“…e paper [6] was a source of data for the B-Fe-V system. Data for the B-Fe-Mn system were taken from the literature [7]. Data for the Fe-Mn-V system were taken from the private steel database [8], and the data are shown in Table 2.…”

Section: Thermodynamic Model and Calculationsmentioning

confidence: 99%

“…. Modelling of the system is based on the same binary data as modelling other ternary subsystems [6,7] of the studied quaternary system and mentioned experimental work [5]. Calculated binary phase diagrams are presented in Figure 1.…”

Section: B-mn-v Ternary Systemmentioning

confidence: 99%

“…ey constructed the isothermal section at 1073 K. However, no thermodynamic description of the ternary system was found in their work and also in other literature. ermodynamic descriptions of the B-Fe-V and B-Fe-Mn systems are given in our previous works [6,7]. Neither theoretical nor experimental phase diagram information was found in the literature for the quaternary B-Fe-Mn-V system.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study of Phase Composition of B‐Fe‐Mn‐V Alloys and Thermodynamic Calculations of Phase Equilibria in the B‐Mn‐V and B‐Fe‐Mn‐V Systems

Homolová

Kepič

Zemanová

et al. 2018

Advances in Materials Science and Engineering

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Phase compositions of B-Fe-Mn-V alloys were studied by several experimental methods (DTA measurement, X-ray diffractions, and scanning electron microscopy). Besides the experimental study of the quaternary system, thermodynamic modelling of the ternary B-Mn-V system by the Calphad method and thermodynamic calculations for the quaternary B-Fe-Mn-V system were performed. Calculations for the quaternary system are based on the ternary subsystems (B-Mn-V, B-Fe-V, B-Fe-Mn, and Fe-Mn-V). Boron is modelled as an interstitial element in all solid solutions of vanadium, manganese, and iron. Very good agreement between experimental results and thermodynamic calculations was achieved. The created thermodynamic database is suitable for thermodynamic calculations of phase diagrams for all the ternary subsystems and also for the B-Fe-Mn-V quaternary system.

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Simulation of B Segregation at Austenite Grain Boundary in Low Carbon Steel

Enomoto,

Wang

2024

steel research int.

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The diffusion and segregation of boron (B) at the austenite grain boundary have been simulated in continuously cooled low carbon steels to elucidate the role of vacancy, the influence of austenite grain size and thermodynamic interaction between solutes. First‐principles calculations were carried out to obtain the stable configuration of B‐vacancy complexes and the binding energies therein. The thermodynamic equations of a hybrid interstitial‐substitutional solid solution were utilized to evaluate the contribution of interstitial B atoms and B‐vacancy complexes to boundary enrichment. The latter contribution did not appear to be significant probably due to their small concentration and/or low mobility. The grain growth of austenite is likely to play a significant role in B enrichment at elevated temperatures. Due to the strong C‐Mo interaction, the carbon flux in the grain interior did decrease, but the interaction within the grain boundary had a much greater influence on the segregation amount. The B enrichment in an Fe‐C‐B‐Mo quaternary alloy was simulated for comparison with experiment. A sophisticated approach, e.g., segregation energies spectrum, may be necessary to reproduce adequately the B segregation behavior, which also depends sensitively on process parameters and microstructure.

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Experimental study and thermodynamic modelling of the B-Fe-Mn ternary system

Cited by 7 publications

References 18 publications

The Influence of the Third Element on Nano-Mechanical Properties of Iron Borides FeB and Fe2B Formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) Alloys

The Influence of the Third Element on Nano-Mechanical Properties of Iron Borides FeB and Fe2B Formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) Alloys

Experimental Study of Phase Composition of B‐Fe‐Mn‐V Alloys and Thermodynamic Calculations of Phase Equilibria in the B‐Mn‐V and B‐Fe‐Mn‐V Systems

Simulation of B Segregation at Austenite Grain Boundary in Low Carbon Steel

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