Characterization of the boron layer formed by pack boronizing of binary iron-niobium alloys

Teker, Tanju; Karakurt, Eyyüp Murat

doi:10.3139/120.111396

Cited by 4 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The unborided Hardox 450 steel exhibited the highest wear rate. In contrast, the lowest wear rate occurred in the Hardox 450 samples borided at 900 ∘ C owing to toughness of the Fe 2 B and FeB phases, and also, the lowest wear rate for Hituf steels came about in the samples borided at 800 ∘ C. Due to the decrease in the hardness with the growth of crystals of borides formed at high boriding temperatures, there was an increase in wear rates in Hardox 450 borided at 1000 ∘ C as well as HiTuf steel borided at 900 and 1000 ∘ C. It was reported that the hardness and thickness of the boride layers formed on the surface [3,13,37] and also the other factors such as adhesion strength, elasticity modulus and fracture toughness [38] might have a considerable effect on wear resistance, and the increase in hardness and thickness could ensure greater resistance to abrasive wear. According to the results of the wear test, it has been shown that the wear resistance of the borided samples significantly enhanced by the boriding treatment due to having high toughness of the Fe 2 B and FeB boride layers.…”

Section: Resultsmentioning

confidence: 99%

Effect of pack-boriding on the tribological behavior of Hardox 450 and HiTuf Steels

Aktaş

Toprak

Çalık

et al. 2020

Reviews on Advanced Materials Science

View full text Add to dashboard Cite

In this study, Hardox 450 and HiTuf steels were boronized by pack-boriding method at 800, 900, and 1000∘C for 5 h. The phases, microstructure, hardness, and wear behavior of boride layers formed on the surface of samples were investigated using XRD, SEM, Micro-Vickers hardness testers, and a pin-on-disc tribotester, respectively. XRD analysis showed that both FeB and Fe2B phases were formed in the borided area of Hardox 450 steel, but only Fe2B phase occurred in the boride layer of the HiTuf steel. Micro-Vickers hardness results indicated that the hardness values of the boride layer decreased from the column-shaped structure to towards the matrix in both of Hardox 450 and HiTuf steels. Furthermore, the wear test results showed the coefficients of friction (COF) decreased significantly in the borided samples. The COF of the unborided Hardox 450 steel was reduced considerably from 0.29 to 0.02 by boriding treatment. Similarly, the COF of unborided HiTuf steel was significantly diminished from 0.16 to 0.04 by boriding treatment. In conclusion, the results of this study have indicated that the wear resistance of Hardox 450 and HiTuf steels can be improved by pack-boriding.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of pack-boriding on the tribological behavior of Hardox 450 and HiTuf Steels

Aktaş

Toprak

Çalık

et al. 2020

Reviews on Advanced Materials Science

View full text Add to dashboard Cite

show abstract

“…Appropriate selection of coating might increase the performance of AISI M2 mandrel and thereby increase the life. Transition metal carbides and nitrides were widely used in tribological applications for excellent corrosion and wear resistance, higher hardness and low co-efficient of friction [1]. PVD, CVD and thermo-reactive diffusion (TRD) are the different techniques used to form transition carbide and nitride coating [2,3].…”

Section: Introductionmentioning

confidence: 99%

Effect of duplex coating (VC–VN) on forming mandrel for better wear resistance

Hariramkumar

Natarajan

2020

Surface Engineering

View full text Add to dashboard Cite

The present work aims at investigating the collective function of thermo-reactive diffusion (TRD) and plasma-nitriding duplex coating (vanadium carbide (VC) and vanadium nitride (VC-VN)) on the wear resistance of AISI M2 axial-forming mandrel. TRD process was carried out in molten salt bath furnace at 1020 ± 25°C for 5-6 h and the samples were subjected to vacuum heat treatment process at 1150°C, followed by plasma-nitriding for 1 h at 550°C. Wear properties were examined by subjecting the VC and VC-VN-coated samples to wear test (pin on disc) at normal and elevated temperature (50°and 150°C) with lubrication. Phase composition, surface morphology and elemental mapping were studied through X-ray diffractometer, SEM and EDS analyses, respectively. Study found that the wear resistance of VC-coated samples was higher than VC-VN-coated samples and wear mechanisms for VC and VC-VN coated specimens were assessed to be abrasive and abrasive-oxidative in nature, respectively.

show abstract

Metallurgical properties of boride layers formed in pack boronized cementation steel

Teker

Sarı

2022

Materials Testing

View full text Add to dashboard Cite

In the present study, cementation steel was exposed to boronizing process at 950 °C for 6, 8, and 10 h. Microstructural changes on the surface of the samples after boron operation were inspected by optical microscope, scanning electron microscope, energy-dispersive spectroscopy, X-ray diffraction, electron back-scatter diffraction, and elemental mapping analysis. In addition, surface roughness, microhardness, and boride layer thicknesses were measured. The boride layers deposited on the cementation steel consisted either single or double phases. The level of boride deposit of all samples was achieved from 90 to 156 μm. The boride layer created at 950 °C for 10 h involved the FeB and Fe2B. The boride layers had a much higher hardness value than the substrate material due to the presence of FeB and Fe2B.

show abstract

Characterization of the boron layer formed by pack boronizing of binary iron-niobium alloys

Cited by 4 publications

References 13 publications

Effect of pack-boriding on the tribological behavior of Hardox 450 and HiTuf Steels

Effect of pack-boriding on the tribological behavior of Hardox 450 and HiTuf Steels

Effect of duplex coating (VC–VN) on forming mandrel for better wear resistance

Metallurgical properties of boride layers formed in pack boronized cementation steel

Contact Info

Product

Resources

About