Experimental Investigation of Isothermal Section of the B-Cr-Fe Phase Diagram at 1353 K

Homolová, Viera; Čiripová, Lucia

doi:10.1155/2017/2703986

Cited by 9 publications

(12 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highest intensity and increased number of peaks of the obtained phases occur in the angular range of 35 • to 55 • . The resulting phases correspond to the phases that can be read from the Fe-Cr-B, Fe-CB, and Cr-BC phase equilibrium diagrams and correspond to the results of other researchers who take up this problem [43][44][45].…”

Section: Resultssupporting

confidence: 69%

Microstructural and Mechanical Properties of B-Cr Coatings Formed on 145Cr6 Tool Steel by Laser Remelting of Diffusion Borochromized Layer Using Diode Laser

et al. 2021

View full text Add to dashboard Cite

The paper presents study results focused on the microstructural, mechanical, and physicochemical properties of B-Cr coatings obtained by means of modification of diffusion borochromized layers by diode laser beam. The studies were conducted on 145Cr6 tool steel. Diffusion borochromized layers were produced at 950 °C in powder mixture containing boron carbides as a source of boron and ferrochrome as a source of chromium. In the next step these layers were remelted using laser beam. Powers: 600, 900, and 1200 W were used during these processes. The microstructure, microhardness, chemical composition, as well as wear and corrosion resistance of newly-formed B-Cr coatings were determined. As a result of laser beam interaction, the diffusion borochromized layer was mixed with the steel substrate. The study showed that too low laser beam power causes cracks in the newly formed B-Cr coating, and on the other hand, too higher laser beam power causes deep remelting resulting in the loss of microhardness. The reduced corrosion resistance in comparison with diffusion borochromized layers was caused by occurrence cracks or deep remelting. For B-Cr coatings produced using laser beam power 600 W, a small decrease in wear resistance was observed, but note that this coating was much thicker than diffusion borochromized layers. On the other hand, laser beam power of 1200 W caused a significant decrease in wear resistance. Newly formed B-Cr coatings had an advantageous microhardness gradient between the layer and the substrate.

show abstract

Section: Resultssupporting

confidence: 69%

Microstructural and Mechanical Properties of B-Cr Coatings Formed on 145Cr6 Tool Steel by Laser Remelting of Diffusion Borochromized Layer Using Diode Laser

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The phases that can be attributed to this content are Fe 3 (C,B) or Fe 23 (C,B) 6 . As a result of the application of the Cr-B mixture in the remelting zone, a chemical composition was obtained corresponding to the complex phase (Cr,Fe) 2 B, (Fe,Cr) 3 (C,B) [ 38 , 39 , 40 , 41 , 42 , 43 , 44 ]. In the photos of microstructures 6a and 6d, white precipitates are visible.…”

Section: Resultsmentioning

confidence: 99%

Characteristics of Cr-B Coatings Produced on Vanadis® 6 Tool Steel Using Laser Processing

Bartkowska¹

2021

Materials

View full text Add to dashboard Cite

The paper presents the results of a study of the microstructure, chemical composition, microhardness and corrosion resistance of Cr-B coatings produced on Vanadis 6 tool steel. In this study, chromium and boron were added to the steel surface using a laser alloying process. The main purpose of the study was to determine the impact of those chemical elements on surface properties. Chromium and boron as well as their mixtures were prepared in various proportions and then were applied on steel substrate in the form of precoat of 100 µm thickness. Depending on the type of precoat used and laser processing parameters, changes in microstructure and properties were observed. Coatings produced using precoat containing chromium and boron mixture were characterized by high microhardness (900 HV0.05–1300 HV0.005) while maintaining good corrosion resistance. It was also found that too low laser beam power contributed to the formation of cracks and porosity.

show abstract

“…The Fe-B-X alloys were prepared from high-purity powders (Fe-99.98 % or 99.96 %, B-99.95 %, C-99.90 %, Cr-99.99%, Mn-99.98 % or 99.95 %, V-99.80 %, W-99.90 %). Details on the production process can be found in published studies on phase equilibria and/or thermodynamic modelling studies [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ]. The mixed powders were pressed into cylindric compacts using a uniaxial pressing machine.…”

Section: Methodsmentioning

confidence: 99%

“…The investigative Fe-B alloys of the following type: B-Fe-C, B-Fe-Cr, B-Fe-Mn, B-Fe-V, and B-Fe-W, were chosen as such, so as to be able to isolate as much as possible the effect of the third compositional element present in the iron borides on their nanomechanical properties. In general, the solubility of tungsten (W) and carbon (C) in iron borides is low, while the solubility of chromium (Cr) reaches up to 15 at.% for Fe 2 B phase, and 16 at.% for FeB boride at 1353 K [ 38 ]. Manganese (Mn) can completely replace iron in these borides [ 39 ], therefore it is interesting to study the influence of these elements on borides mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Third Element on Nano-Mechanical Properties of Iron Borides FeB and Fe2B Formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) Alloys

et al. 2020

Self Cite

View full text Add to dashboard Cite

In this study, the influence of alloying elements on the mechanical properties of iron borides FeB and Fe2B formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) alloys were evaluated using instrumented indentation measurement. The microstructural characterization of the alloys was performed by means of X-ray diffraction and scanning electron microscope equipped with an energy dispersive X-ray analyzer. The fraction of the phases present in the alloys was determined either by the lever rule or by image analysis. The hardest and stiffest FeB formed in Fe-B-X (X = C, Cr, Mn) alloys was observed in the Fe-B-Cr alloys, where indentation hardness of HIT = 26.9 ± 1.4 GPa and indentation modulus of EIT = 486 ± 22 GPa were determined. The highest hardness of Fe2B was determined in the presence of tungsten as an alloying element, HIT = 20.8 ± 0.9 GPa. The lowest indentation hardness is measured in manganese alloyed FeB and Fe2B. In both FeB and Fe2B, an indentation size effect was observed, showing a decrease of hardness with increasing indentation depth.

show abstract

Experimental Investigation of Isothermal Section of the B-Cr-Fe Phase Diagram at 1353 K

Cited by 9 publications

References 12 publications

Microstructural and Mechanical Properties of B-Cr Coatings Formed on 145Cr6 Tool Steel by Laser Remelting of Diffusion Borochromized Layer Using Diode Laser

Microstructural and Mechanical Properties of B-Cr Coatings Formed on 145Cr6 Tool Steel by Laser Remelting of Diffusion Borochromized Layer Using Diode Laser

Characteristics of Cr-B Coatings Produced on Vanadis® 6 Tool Steel Using Laser Processing

The Influence of the Third Element on Nano-Mechanical Properties of Iron Borides FeB and Fe2B Formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) Alloys

Contact Info

Product

Resources

About