Characterization of AISI 4140 borided steels

Campos-Silva, I.; Domı́nguez, Mariana; Perrusquia, N. López; Meneses-Amador, A.; Galindo, R. Escobar; Martínez-Trinidad, J.

doi:10.1016/j.apsusc.2009.10.070

Cited by 84 publications

(45 citation statements)

References 29 publications

(31 reference statements)

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“…1. A cross-sectional view of AISI 1018 borided steel exposed to the boriding process for 8 h at a temperature of 1273 K. be a reasonable assumption for brittle layers on relatively tough substrates, as the Palmqvist regime is based on the initiation of cracking at the surface, where the material is more brittle [4,[9][10][11][12].…”

Section: Superposition Principlementioning

confidence: 99%

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An expression to determine the Vickers indentation fracture toughness obtained by the finite element method on Fe2B layers

Meneses-Amador

Campos-Silva

Martínez-Trinidad

et al. 2013

Surface and Coatings Technology

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Section: Superposition Principlementioning

confidence: 99%

“…Other researchers have evaluated the fracture toughness of the Fe 2 B layers formed at the surface of medium-carbon and low-alloy borided steels using the Palmqvist crack regime [9,10]. The fracture toughness was represented by K C (θ), where θ is the coordinate angle between the direction of crack propagation and the surface.…”

Section: Introductionmentioning

confidence: 99%

An expression to determine the Vickers indentation fracture toughness obtained by the finite element method on Fe2B layers

Meneses-Amador

Campos-Silva

Martínez-Trinidad

et al. 2013

Surface and Coatings Technology

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“…The present model was validated by comparing the experimental value of the Fe 2 B layer thickness with the predicted result at a temperature of 1253 K for a treatment time of 5 h using Equation (13) Table 3 gives a comparison between the experimental value of the Fe 2 B layer thickness and the one predicted on the basis of Equation (13). A good agreement was obtained between the experimental value of the Fe 2 B layer thickness and the predicted one for the AISI 4140 steel borided at 1253 K for 5 h. …”

Section: Validation Of the Diffusion Modelmentioning

confidence: 99%

“…In particular, many models reported in the literature were used for analyzing the kinetics of the Fe 2 B layers grown on different substrates [6][7][8][9][10][11][12][13][14][15][16] , with and without the boride incubation times.…”

Section: Introductionmentioning

confidence: 99%

Kinetic study and characterization of borided AISI 4140 steel

Кеддам¹

2015

Mater. Tehnol.

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In the present study, an alternative diffusion model was proposed for analyzing the growth of Fe 2 B layers formed on the AISI 4140 steel during the pack-boriding process. This model was based on solving the mass-balance equations for the Fe 2 B/Fe interface to evaluate boron diffusion coefficients through the Fe 2 B layers in a temperature range of 1123-1273 K. The boride incubation time for the Fe 2 B phase was included in the present model. The suggested model was validated experimentally at a temperature of 1253 K for a treatment time of 5 h. Furthermore, the generated boride layers were analyzed with light microscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction analysis (XRD). In addition, a contour diagram was also proposed as a function of treatment time and temperature. On the basis of our experimental results, the boron activation energy for the AISI 4140 steel was found to be 189.24 kJ mol -1 . Keywords: boriding, incubation time, diffusion model, growth kinetics, activation energy, adherence V tej {tudiji je predlagan alternativni model difuzije za analiziranje rasti Fe 2 B-plasti, ki nastane na jeklu AISI 4140 pri boriranju v {katli. Ta model temelji na re{itvi ena~be ravnote`ja mas na stiku (Fe 2 B/Fe) pri oceni koeficienta difuzije bora skozi Fe 2 B-sloje v temperaturnem obmo~ju 1123-1273 K. Inkubacijski~as borida za Fe 2 B-fazo je bil vklju~en v predstavljeni model. Predlagani model je bil eksperimentalno ocenjen pri temperaturi 1253 K in~asu obdelave 5 h. Poleg tega so bili izdelani sloji analizirani na svetlobnem mikroskopu, z vrsti~nim elektronskim mikroskopom (SEM), energijsko disperzijsko rentgensko spektroskopijo (EDS) in z rentgensko difrakcijsko analizo (XRD). Dodatno je bil predlagan {e konturni diagram kot funkcija~asa obdelave in temperature. Na podlagi eksperimentalnih rezultatov je bilo ugotovljeno, da je aktivacijska energija bora pri jeklu AISI 4140 189,24 kJ mol -1 .

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“…The two temperature-dependent parameters β FeB (T ) and β(T ) are respectively given by Eqs. (18) and (19):…”

Section: Fe2b Bmentioning

confidence: 99%

Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel

et al. 2015

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In the present work, a diusion model was applied to estimate the boron diusion coecients in the FeB and Fe2B layers during the pack-boriding of AISI D2 steel in the temperature range of 12231323 K during a variable exposure time between 1 and 8 h. The mass balance equations were formulated at each growing interface by considering the eect of boride incubation times. The estimated values of boron activation energies in the FeB and Fe2B layers were compared with the literature data. Validation of the present model was made by comparing the experimental thickness of each boride layer, taken from the literature data, with the predicted values. In addition, a simple equation was suggested to estimate the required time to obtain a single Fe2B layer by diusion annealing.

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Characterization of AISI 4140 borided steels

Cited by 84 publications

References 29 publications

An expression to determine the Vickers indentation fracture toughness obtained by the finite element method on Fe2B layers

An expression to determine the Vickers indentation fracture toughness obtained by the finite element method on Fe2B layers

Kinetic study and characterization of borided AISI 4140 steel

Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel

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Characterization of AISI 4140 borided steels

Cited by 84 publications

References 29 publications

An expression to determine the Vickers indentation fracture toughness obtained by the finite element method on Fe2B layers

An expression to determine the Vickers indentation fracture toughness obtained by the finite element method on Fe2B layers

Kinetic study and characterization of borided AISI 4140 steel

Determination of the Diffusion Coefficients of Boron in the FeB and Fe2B Layers Formed on AISI D2 Steel

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Determination of the Diffusion Coefficients of Boron in the FeB and Fe₂B Layers Formed on AISI D2 Steel