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Open AccessFeature PaperArticle

Effect of Electrode Covering Composition on the Microstructure, Wear, and Economic Feasibility of Fe-C-Cr Manual Arc-Welded Hardfacings

1
Vytautas Magnus University, K. Donelaičio St. 58, 44248 Kaunas, Lithuania
2
Faculty of Engineering, Department of Material Science and Manufacturing Technology, Czech University of Life Sciences Prague, Kamycka 129, 16500 Praha, Czech Republic
3
Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
4
Department of Materials Science and Welding, Faculty of Mechanics, Vilnius Gediminas Technical University, J. Basanavičiaus g. 28, LT–03224 Vilnius, Lithuania
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(3), 294; https://doi.org/10.3390/coatings10030294
Received: 20 February 2020 / Revised: 11 March 2020 / Accepted: 16 March 2020 / Published: 21 March 2020
(This article belongs to the Special Issue Manufacturing and Surface Engineering II)
Manual arc-welded hardfacings are widely used for the protection of new or the restoration of worn parts in agriculture, forestry, and mining applications. A study was conducted to investigate the effect of electrode covering composition on the microstructure, wear (low, average stress abrasion; erosion at 30, 50, and 80 m s−1), and economic feasibility of Fe–C–Cr manual arc-welded hardfacings. Hardfacings were produced with the carbon and chrome contents varied in the ranges of 0.87–2.95 and 1.3–33.2 wt.%, respectively. The major phases composing the microstructures of the hardfacings were austenite, perlite, ledeburite, and various carbides, including eutectic M7C3. Technical and economic analyses were performed to assess the economic feasibility of hardfacings and reference wear-resistant steel Hardox 400. A wear and economic feasibility map was created to specify various types and facilitate the selection of optimal hardfacings for specific conditions. The produced Fe–C–Cr coatings were the most effective in low-stress abrasive conditions (up to 7.8 times greater than Hardox 400) and quite effective in erosive conditions (up to 2.9 times greater than Hardox 400). View Full-Text
Keywords: hardfacing; abrasive wear; erosive wear; wear and economic feasibility map hardfacing; abrasive wear; erosive wear; wear and economic feasibility map
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Jankauskas, V.; Katinas, E.; Laskauskas, A.; Antonov, M.; Varnauskas, V.; Gedzevičius, I.; Aleknevičienė, V. Effect of Electrode Covering Composition on the Microstructure, Wear, and Economic Feasibility of Fe-C-Cr Manual Arc-Welded Hardfacings. Coatings 2020, 10, 294.

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