A study of thermocycling boroaluminizing of carbon steels

Sizov, I. G.; Mishigdorzhijn, U. L.; Makharov, D. M.

doi:10.1007/s11041-012-9440-4

Cited by 17 publications

(10 citation statements)

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“…It is known that during boroaluminising, iron borides are mainly formed on the border of the base metal. 1,4,7 X-ray spectrometry microanalysis showed that there is 8–9 wt-% of boron and 0·4–1·6 wt-% aluminium in the crystal zone. Such boron content relates to iron boride Fe 2 B alloyed by aluminium.…”

Section: Resultsmentioning

confidence: 99%

“…Previously, the authors have found that the maximum increase in heat resistance was observed after thermocycle mode 1 with four cycles, and wear-resistance was achieved after thermocycle mode 2 with eight cycles. 7 The phase composition was performed by X-ray diffractometer 'Bruker D8' with a detector 'Vantec 2000'. The shooting took place in 2q-q regime.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…The authors have recently developed a method of thermocycle boroaluminising of carbon steels. 6,7 This method involves powder mixture saturation in an airtight container. Saturation is performed under repeated heating and cooling modes in the given range of 650-950uC.…”

Section: Introductionmentioning

confidence: 99%

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Influence of thermocycle boroaluminising on strength of steel C30

Sizov

Mishigdorzhiyn

Leyens³

et al. 2014

Surface Engineering

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The article describes the research results of steel C30 boroaluminised by isothermal and thermocycle methods in powder mixtures. Thermocycling is performed in the range of 650-950uC. In this study, a comparative analysis of microstructure, composition of elements and microhardness of boroaluminised steels after various treatments is presented. A series of tensile tests and a plasticity estimation of boroaluminised layer were carried out.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of thermocycle boroaluminising on strength of steel C30

Sizov

Mishigdorzhiyn

Leyens³

et al. 2014

Surface Engineering

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“…This kind of TCT comprises simultaneous or sequential diffusion saturation of the surface of metals and alloys with several chemical elements. Such complex TCT methods as boroaluminizing can significantly increase wear and corrosion resistance, oxidation behavior at high temperatures and other properties of the surface layers of machine parts [3]. Today, the task of developing boroaluminized coatings with a set of desirable physical and mechanical properties still hasn't been carried out.…”

Section: Introductionmentioning

confidence: 99%

Electron-Beam Surface Modification of Boron-Based Diffusion Layers Obtained of the Surface of Steel H21

Mishigdorzhiyn¹,

Ulakhanov

Семенов³

2021

Heat Treat 2021: Extended Abstracts From the 31st Heat Treating Society Conference and Exposition

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In recent years the interest in the development of new protective coatings with improved functional properties for machine parts’ surface have been of great fundamental and applied importance. The current study is devoted to the creation of coatings based on boron and aluminium on the surface of alloy steel using a cutting-edge method, combining thermal-chemical treatment (TCT) and subsequent electron beam processing (EBP). TCT was carried out in treatment pastes based on boron carbide and aluminum at 950°C and 1050°C for 2 hours. As a result of processing, diffusion layers with a thickness of up to 120 μm and 580 μm were formed on the steel surface after TCT at 950°C and 1050°C respectively. The subsequent EBP led to a complete transformation of the primary diffusion layer and an increase in its thickness to 1.6 mm. XRD analysis showed significant differences in composition before and after EBP: new compound, such as tungsten borides (WB, W2B9) and iron boride (Fe2B) were detected. In addition, it was determined that the distribution of microhardness and elemental composition (B, Al, W) over the layer thickness after EBP had a more favorable profile without significant fluctuations compared to the sample after TCT. The concentration of Al decreased significantly after EBP. It dropped from 18% after TCT to a low of 1%.

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