Effect of the Number of Welding Passes on the Microstructure and Wear Behavior of St52 Plain Carbon Steel Coated with a High Chromium-Carbon Electrode
This study investigated the effect of the number of welding passes on the microstructure, hardness, and wear behavior of St52 plain carbon steel coated with an E10-UM-60R electrode in accordance with the DIN 8555 standard using SMAW method. An optical microscope (OM) and a scanning electron microsco...
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| Format: | Article |
| Language: | English |
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Islamic Azad University-Isfahan (Khorasgan) Branch
2019-03-01
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| Series: | International Journal of Advanced Design and Manufacturing Technology |
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| Online Access: | https://admt.isfahan.iau.ir/article_668333_a17c0ec4e0fdd0c311aade3ec71fdab0.pdf |
| _version_ | 1827791162085212160 |
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| author | Mohsen Barmaki Kamran Amini Farhad Gharavi |
| author_facet | Mohsen Barmaki Kamran Amini Farhad Gharavi |
| author_sort | Mohsen Barmaki |
| collection | DOAJ |
| description | This study investigated the effect of the number of welding passes on the microstructure, hardness, and wear behavior of St52 plain carbon steel coated with an E10-UM-60R electrode in accordance with the DIN 8555 standard using SMAW method. An optical microscope (OM) and a scanning electron microscope (SEM) were used, and an EDS analysis was carried out to examine the microstructure. The Vickers micro hardness test and a reciprocating wear test were also used to examine the hardness and wear resistance. The results showed that the structure on the surface of the coated specimens is consisted of M7C3 carbides in the eutectic field (). In addition, the volume fraction of carbides increased in specimens that underwent two passes of welding relative to that in one pass-welded specimen. The reason for this was related to the decreased dilution of iron and increased dilution of chromium in the two-pass welded specimen and an increase in the volume fraction of M7C3 carbides. The increased percentage of carbides in the two-pass welded specimen increased the hardness and consequently the wear resistance relative to those in the one-pass welded specimen in a way that the surface hardness and weight loss in the wear test reached from 780 HV and 3.7 mg in the one-pass welded specimen to 910 HV and 2.5 mg in the two-pass welded specimen. Moreover, examining the wear surfaces indicated the occurrence of an adhesive wear mechanism in the specimens in a way that the adhesive wear rate decreased in the two-pass welded specimens. |
| first_indexed | 2024-03-11T17:43:11Z |
| format | Article |
| id | doaj.art-b9baca008b33471f845475879777a1b2 |
| institution | Directory Open Access Journal |
| issn | 2252-0406 2383-4447 |
| language | English |
| last_indexed | 2024-03-11T17:43:11Z |
| publishDate | 2019-03-01 |
| publisher | Islamic Azad University-Isfahan (Khorasgan) Branch |
| record_format | Article |
| series | International Journal of Advanced Design and Manufacturing Technology |
| spelling | doaj.art-b9baca008b33471f845475879777a1b22023-10-18T09:04:35ZengIslamic Azad University-Isfahan (Khorasgan) BranchInternational Journal of Advanced Design and Manufacturing Technology2252-04062383-44472019-03-011217783668333Effect of the Number of Welding Passes on the Microstructure and Wear Behavior of St52 Plain Carbon Steel Coated with a High Chromium-Carbon ElectrodeMohsen Barmaki0Kamran Amini1Farhad Gharavi2Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, IranDepartment of Mechanical Engineering, Tiran Branch, Islamic Azad University, Isfahan, IranDepartment of Materials Engineering, Sirjan Branch, Islamic Azad University, Sirjan, IranThis study investigated the effect of the number of welding passes on the microstructure, hardness, and wear behavior of St52 plain carbon steel coated with an E10-UM-60R electrode in accordance with the DIN 8555 standard using SMAW method. An optical microscope (OM) and a scanning electron microscope (SEM) were used, and an EDS analysis was carried out to examine the microstructure. The Vickers micro hardness test and a reciprocating wear test were also used to examine the hardness and wear resistance. The results showed that the structure on the surface of the coated specimens is consisted of M7C3 carbides in the eutectic field (). In addition, the volume fraction of carbides increased in specimens that underwent two passes of welding relative to that in one pass-welded specimen. The reason for this was related to the decreased dilution of iron and increased dilution of chromium in the two-pass welded specimen and an increase in the volume fraction of M7C3 carbides. The increased percentage of carbides in the two-pass welded specimen increased the hardness and consequently the wear resistance relative to those in the one-pass welded specimen in a way that the surface hardness and weight loss in the wear test reached from 780 HV and 3.7 mg in the one-pass welded specimen to 910 HV and 2.5 mg in the two-pass welded specimen. Moreover, examining the wear surfaces indicated the occurrence of an adhesive wear mechanism in the specimens in a way that the adhesive wear rate decreased in the two-pass welded specimens.https://admt.isfahan.iau.ir/article_668333_a17c0ec4e0fdd0c311aade3ec71fdab0.pdfhard facinghardnesshigh chromium-carbon electrodest52 plain carbon steelwear |
| spellingShingle | Mohsen Barmaki Kamran Amini Farhad Gharavi Effect of the Number of Welding Passes on the Microstructure and Wear Behavior of St52 Plain Carbon Steel Coated with a High Chromium-Carbon Electrode International Journal of Advanced Design and Manufacturing Technology hard facing hardness high chromium-carbon electrode st52 plain carbon steel wear |
| title | Effect of the Number of Welding Passes on the Microstructure and Wear Behavior of St52 Plain Carbon Steel Coated with a High Chromium-Carbon Electrode |
| title_full | Effect of the Number of Welding Passes on the Microstructure and Wear Behavior of St52 Plain Carbon Steel Coated with a High Chromium-Carbon Electrode |
| title_fullStr | Effect of the Number of Welding Passes on the Microstructure and Wear Behavior of St52 Plain Carbon Steel Coated with a High Chromium-Carbon Electrode |
| title_full_unstemmed | Effect of the Number of Welding Passes on the Microstructure and Wear Behavior of St52 Plain Carbon Steel Coated with a High Chromium-Carbon Electrode |
| title_short | Effect of the Number of Welding Passes on the Microstructure and Wear Behavior of St52 Plain Carbon Steel Coated with a High Chromium-Carbon Electrode |
| title_sort | effect of the number of welding passes on the microstructure and wear behavior of st52 plain carbon steel coated with a high chromium carbon electrode |
| topic | hard facing hardness high chromium-carbon electrode st52 plain carbon steel wear |
| url | https://admt.isfahan.iau.ir/article_668333_a17c0ec4e0fdd0c311aade3ec71fdab0.pdf |
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