| Title: | Comparison of the mechanical properties of hardfacings made by standard coated stick electrodes and a newly developed rectangular stick electrode |
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| Authors: | ID Bjelajac, Edvard (Author)
ID Skumavc, Andrej (Author)
ID Lojen, Gorazd (Author)
ID Manjgo, Mirza (Author)
ID Vuherer, Tomaž (Author) |
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| Files: |  materials-17-02051-v2.pdf (10,82 MB)
MD5: D6E61CB47EAD408AFE41C3DFF61F13E7
 https://www.mdpi.com/1996-1944/17/9/2051
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | Cladding with a stick electrode is one of the oldest arc processes for adding a deposit on a base material. The process is suitable for outdoor working, but the disadvantages are low productivity and large dilution rates. In this work, a simple solution is proposed, which would enable cladding of a larger area with one pass and decrease the dilution rate at the same time—a new type of electrode was developed, exhibiting a rectangular cross-section instead of a round one. Hardfacings, welded with E Fe8 electrodes according to EN 14 700 Standard were welded on mild steel S355 J2 base material with three different coated stick electrodes. The first one was a commercially available, standard, round hardfacing electrode, the second was the same, but with a thinner coating, and the third one was a newly developed rectangular electrode. All three types had equal cross-sections of the metallic core and the same type of coating. Manufacturing of the rectangular electrodes in the laboratory is explained briefly. One- and multi-layer deposits were welded with all three types. Differences were observed in the arc behavior between the round and rectangular electrodes. With the rectangular electrode, the microstructure of the deposit was finer, penetration was shallower, and dilution rates were lower, while the hardness was higher, residual stresses predominantly compressive, and the results of instrumented Charpy impact tests and fracture mechanics tests were better. |
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| Keywords: | hardfacing, dilution rate, hardness, Charpy impact toughness, residual stress, fracture toughness |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 30.03.2024 |
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| Article acceptance date: | 25.04.2024 |
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| Publication date: | 27.04.2024 |
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| Publisher: | MDPI |
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| Year of publishing: | 2024 |
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| Number of pages: | 22 str. |
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| Numbering: | Vol. 17, iss. 9, [article no.] 2051 |
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| PID: | 20.500.12556/DKUM-88589  |
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| UDC: | 621.791 |
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| ISSN on article: | 1996-1944 |
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| COBISS.SI-ID: | 195422979 |
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| DOI: | 10.3390/ma17092051 |
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| Copyright: | © 2024 by the authors |
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| Publication date in DKUM: | 14.05.2024 |
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| Views: | 453 |
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| Downloads: | 41 |
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| Metadata: |    |
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| Categories: | Misc.
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