A Study on Hardfacing Alloy Using Fe-Cr and Fe-B Powders

Karip, Erdoğan; Aydın, Sezgin; Muratoğlu, Mehtap

doi:10.12693/aphyspola.128.b-160

Cited by 12 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that chromium has a high affinity for forming bonds with nitrogen so precipitating as fine semi-coherent CrN nitrides with B1-type structure, directly responsible for observed hardening [8].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Hardness Curves for 31CrMoV9 Steel after Gas Nitriding

2017

View full text Add to dashboard Cite

This work is an experimental study of the hardness curve in the zone of diffusion for the gas nitriding process of 31CrMoV9 steel. 12 samples were subjected to gas nitriding at three different temperatures -510• C, 550• C, and 590• C -and for each temperature four different nitriding times were used. Hardness was measured with an automatic microhardness tester PCE from LECO with a load of HV0.1 (0.9807N), and the distance between the points was 50 µm. It was found that the hardness of the diffusion layer changed from 602 HV to 787 HV. The maximum surface hardness was found at 510• C after nitriding for 16 h. Depending on the process parameters, the depth of the diffusion layer ranged from 270 µm to 700 µm. From the results we can draw conclusions for the gradient curve of nitriding parameters, and from each curve we can find the depth of the diffusion of nitrogen in steel.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The hardness was measured in the polished surfaces [7,8] of samples with an automatic microhardness tester PCE from LECO. For this we used a small load of HV0.1 (0.9807N), in which the distance between the two measuring points was 50 µm, while the load time was 10 s [9][10][11].…”

Section: Methodsmentioning

confidence: 99%

Hardness Curves for 31CrMoV9 Steel after Gas Nitriding

2017

View full text Add to dashboard Cite

show abstract

“…The TRD coatings need very long treatment times at high temperatures. There are very common industrial methods that can be combined anyway to produce chromium boride coatings [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Production of Chromium Boride Layers on Carbon Steel with Conversion Treatment: Chromium Deposition + Diffusion Annealing

et al. 2017

View full text Add to dashboard Cite

The present study has been conducted in order to obtaining chromium boride layers on carbon steel using a conversion processing comprising the following steps: boriding treatment in order to increase the amount of boron atoms in the steel surface, deposition of a thin layer of pure chromium using electrolytic method, and finally an annealing treatment for boron diffusion and formation of boride layer until complete transformation of chromium layer. Depending on the method used (chromium deposition followed by boriding or boriding followed by chromium deposition) and the holding time, the partial or complete conversion is obtained as a result of the diffusion process. The role of the annealing temperature on transformation rates of chromium into chromium boride films was investigated. It is shown that for 1 h at 900• C, the chromium layer is totally transformed. The scanning electron microscopy analysis and X-ray diffraction showed the presence of CrB and CrB2 chromium borides in addition of FeB and Fe2B iron borides.

show abstract

“…[1][2][3][4] The Fe 2 B phase has been shown to be responsible for the superior wear resistance and mechanical properties of these alloys. 5,6) These alloys have been widely used to prepare Fe-B-C overlays on substrates for enhancement of the wear resistance using conventional hard facing techniques, such as the laser cladding, 7) plasma transferred arc welding, 8) and arc welding.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Zhuang

Jun

et al. 2017

Mater. Trans.

View full text Add to dashboard Cite

The effects of the addition of small amounts of Ti on the phase constitution, microstructure, and wear resistance of Fe-B-C hypereutectic overlays produced using powder-wire composite arc welding were investigated. The Fe-B-C hypereutectic overlay phase consisted of TiB 2 and TiC in addition to Fe and Fe 2 B with the addition of Ti. The addition of Ti inhibited growth of the Fe 2 B and Fe 3 (C,B) phases. When the Ti content reached 0.918 mass%, the daisy-like Fe 3 (C,B) phases disappeared, and precipitation of dispersed TiB 2 and TiC began, which improved the wear resistance. Overlays without macroscopic cracks could be obtained. The wear mode of the Fe-B-C hypereutectic overlay changed from a mixture of microcutting and microfracture wear to microcutting wear.

show abstract

A Study on Hardfacing Alloy Using Fe-Cr and Fe-B Powders

Cited by 12 publications

References 17 publications

Hardness Curves for 31CrMoV9 Steel after Gas Nitriding

Hardness Curves for 31CrMoV9 Steel after Gas Nitriding

Production of Chromium Boride Layers on Carbon Steel with Conversion Treatment: Chromium Deposition + Diffusion Annealing

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Contact Info

Product

Resources

About