A Comparative Study on Boride Layer Morphology of Fe-4Co, Fe-4V and Fe-4W Binary Alloys

• Authors: Y. Azakli , K. Gunduz , M. Tarakci , Y. Gencer
• Languages of publication: EN

Abstracts

EN

In this study, the pack boronizing behavior of Fe-4M alloys (at.% M=W, V, Co) along with pure iron was investigated. The boronizing process was carried out at 1100°C for 3 h. The morphology, microstructure, boride layer thickness and surface properties of the formed boride layers were characterized by XRD, SEM-EDS and profilometry. The average boride layer thicknesses were 85 μm, 130 μm, 275 μm and 280 μm for Fe-4W, Fe-4V, Fe-4Co binary alloys and pure Fe, respectively. The surface roughness was not changed with the addition of alloying element into the substrate. FeB and Fe₂B phases exist on all boronized samples, but their ratio changes owing to alloying elements in the substrate. The saw-tooth morphology has transformed to a smoother boride layer with the addition of alloying elements of W and V, though Co addition was ineffective on saw tooth morphology. In addition, a transition zone under the boride layer was observed for the boronized Fe-W and Fe-V alloys. The formation of precipitates of boride of alloying elements was evident in the boride layer and in the transition zone for borided Fe-4V and Fe-4W alloys. Co has made a solid solution with iron in boride by replacing iron in the boride lattice.

Keywords

EN

81.65.Lp; 81.05.Je; 81.05.Bx

Discipline

• 81.05.Je: Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)(for ceramics in electrochemistry, see 82.45.Yz)
• 81.05.Bx: Metals, semimetals, and alloys
• 81.65.Lp: Surface hardening: nitridation, carburization, carbonitridation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 4
• Pages: 1326-1330

Dates

published

2015-04

Contributors

author

Y. Azakli

• Gebze Institute of Technology, Department of Materials Science and Engineering, Istanbul Cad. No 101, 41400 Gebze, Kocaeli, Turkey

author

K. Gunduz

• Gebze Institute of Technology, Department of Materials Science and Engineering, Istanbul Cad. No 101, 41400 Gebze, Kocaeli, Turkey

author

M. Tarakci

• Gebze Institute of Technology, Department of Materials Science and Engineering, Istanbul Cad. No 101, 41400 Gebze, Kocaeli, Turkey

author

Y. Gencer

• Gebze Institute of Technology, Department of Materials Science and Engineering, Istanbul Cad. No 101, 41400 Gebze, Kocaeli, Turkey

References

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Identifiers

DOI

10.12693/APhysPolA.127.1326