Characterization of complex (B + C) diffusion layers formed on chromium and nickel-based low-carbon steel

Pertek, A.; Kulka, Michał

doi:10.1016/s0169-4332(02)00940-6

Cited by 55 publications

(41 citation statements)

References 10 publications

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“…It was observed that boride layer thickness reduced with increasing the amount of alloying element. The coating thickness was influenced by alloying elements in the metal substrate (especially by chromium) which can modify the active boron diffusivity by entering the iron boride lattice [19]. In addition, Carbucicchio et al [20] reported that with increasing contents of the third alloying element in the alloys, both the depth of FeB-base region and the FeB/ Fe 2 B ratio increases in the case of chromium-containing alloys.…”

Section: Sem-bei Cross-sectional Observation Of Borides Formedmentioning

confidence: 99%

Some mechanical properties of borided AISI H13 and 304 steels

Taktak

2007

Materials & Design

163

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Section: Sem-bei Cross-sectional Observation Of Borides Formedmentioning

confidence: 99%

Some mechanical properties of borided AISI H13 and 304 steels

Taktak

2007

Materials & Design

163

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“…4,5 The boron-rich phase FeB is not preferred since FeB is more brittle and less tough than Fe 2 B. 4,5 Furthermore, the brittleness of FeB layers causes a spalling when a high normal or tangential load is applied.…”

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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“…There are many methods, which can lessen the brittleness of the boride layers. The top three methods are: obtaining a single-phase Fe 2 B layer [6,7]; the production of multicomponent and complex borided layers [8][9][10][11][12][13][14][15][16][17][18][19] and laser heat treatment (LHT) after boriding [20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%