Features of structural changes due to the formation of the boride crystal structure in steels

Pomel’nikova, A. S.; Shipko, M. N.; Stepovich, M. A.

doi:10.1134/s1027451011030165

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…3 and 4, the SEM images of the boride layers of the conventional and microwave-assisted borided samples are given, respectively. While α-Fe has a body-centered cubic structure, neither FeB nor Fe 2 B compounds have cubic crystal symmetry [32]. Therefore, B diffusion and boride grain growth exhibit an unnatural anisotropic structure.…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of Conventional and Microwave-Assisted Boriding of AISI 1040 and AISI 4140 Steels

Ayvaz

Özer

2023

Teh. glas. (Online)

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In this study, AISI 1040 and AISI 4140 steels were boriding using Ekabor-II commercial boriding powder with powder-pack boriding method using microwave and conventional heating methods. The samples were borided at 950 °C for 2 and 6 hours in an Ar atmosphere in a microwave oven of Enerzi-Mh2912-V8. Biphasic structure (FeB/Fe2B) was formed in all borided AISI 4140 samples and AISI 1040 samples borided for 6 hours. A single-phase structure was observed in AISI 1040 steel borided for 2 hours. Compared to the conventional method, a 1.5-1.6 times thicker boride layer was obtained in AISI 4140 and AISI 1040 steels with microwave-assisted powder-pack boriding. The highest hardness was measured as 1561.8 HV0.05 for boriding AISI 4140 steel and 1499.7 HV0.05 for boriding AISI 1040 steel. The Vickers indentation fracture toughness of borided steels with microwave energy varied between 2.31 and 3.46 MPa·m1/2. It was determined that in all samples borided by the microwave-assisted and conventional powder-pack boriding method, the adhesion strength between the boride layers and the substrate obtained was sufficient.

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Section: Resultsmentioning

confidence: 99%

Comparative Study of Conventional and Microwave-Assisted Boriding of AISI 1040 and AISI 4140 Steels

Ayvaz

Özer

2023

Teh. glas. (Online)

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“…In the X -ray diffraction patterns of borided samples it is observed the formation of a layer with the Fe2B phase [25], which is the first type of boride phase to form on the surface of a metal during the process, and also the formation of a second layer with the FeB phase [26]. In addition, diffraction peaks indicate preferred crystal growth orientation in the planes (120), (111), ( 021) and (002) at 2θ incidence angles equal to 39.64, 41.30, 45.12 and 63.16 °, respectively [27,28].…”

Section: Figure 4 -X-ray Diffraction Patterns Of Borided Layer Produced On Aisi 15b30 Samplesmentioning

confidence: 99%

Production and Characterization of Boride and Carbide Layers on AISI 15B30 Steel

Triani

Gomes

Casteletti

et al. 2019

Heat Treat 2019: Proceedings From the 30th Heat Treating Society Conference and Exposition

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In this work, boriding and Thermo-reactive Deposition (TRD) treatments for the production of boride and both vanadium and niobium carbide layers were performed on the substrates of AISI 15B30 steel to evaluate properties such as hardness, adhesive wear resistance, surface adhesion and chemical compounds present in the layers. For this purpose, layers were characterized by optical microscope, Knoop microhardness, microadhesive wear test, Rockwell C indentation adhesion according to VDI 3198 and X-ray diffraction. The results showed layers with high hardness (1400 - 2500 HK), greater microadhesive wear resistance (up to 15 times higher) when compared to the substrate and excellent delamination resistance.

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“…Для визначення хімічного складу сплаву використовували хімічний та спектральний аналіз [8] атомами в елементарній комірці [9][10]. В структурі фази Fe 2 B відбувається пошарове розташування площин з атомів заліза, які утворюють однакові квадратні сітки та площин з атомів бору [5]. Площину для z = 0,5 розвернуто на кут φ = 37,6° по відношенню до площини (z = 0; 1).…”

Section: матеріали та методика дослідженьunclassified

Effect of Carbon on the Physical and Structural Properties of Boride Fe2B

Filonenko

Galdina

2016

PCSS

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Features of structural changes due to the formation of the boride crystal structure in steels

Cited by 10 publications

References 2 publications

Comparative Study of Conventional and Microwave-Assisted Boriding of AISI 1040 and AISI 4140 Steels

Comparative Study of Conventional and Microwave-Assisted Boriding of AISI 1040 and AISI 4140 Steels

Production and Characterization of Boride and Carbide Layers on AISI 15B30 Steel

Effect of Carbon on the Physical and Structural Properties of Boride Fe2B

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