Evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheet
In this paper, bare spot defects in hot-dip galvanized sheets were studied in terms of the microstructure and their influence on the corrosion and mechanical properties. Surface characteristics and microstructural features were examined by scanning electron microscopy equipped with energy dispersive...
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| Format: | Article |
| Language: | fas |
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Isfahan University of Technology
2011-12-01
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| Series: | Journal of Advanced Materials in Engineering |
| Subjects: | |
| Online Access: | http://jame.iut.ac.ir/article-1-528-en.html |
| _version_ | 1818619668940718080 |
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| author | A. Azimi Dastgerdi F. Ashrafizadeh M. R. Toroghinejad F. Shahriari H. Zahraei |
| author_facet | A. Azimi Dastgerdi F. Ashrafizadeh M. R. Toroghinejad F. Shahriari H. Zahraei |
| author_sort | A. Azimi Dastgerdi |
| collection | DOAJ |
| description | In this paper, bare spot defects in hot-dip galvanized sheets were studied in terms of the microstructure and their influence on the corrosion and mechanical properties. Surface characteristics and microstructural features were examined by scanning electron microscopy equipped with energy dispersive spectroscopy microanalysis system. The results showed that the major cause of the bare spots was the lack of wetability of the sheet surface due to contamination, improper heat treatment or chemical composition. Corrosion resistance was evaluated by standard salt spray test. Mechanical properties were examined by tensile testing. The time to red rust was much shorter on the bare spots as compared to other regions, but it appeared that bare spot defects had no significant effect on the mechanical properties of the galvanized steel sheets. |
| first_indexed | 2024-12-16T17:41:09Z |
| format | Article |
| id | doaj.art-458d9d20c4b14ee98265874787a83791 |
| institution | Directory Open Access Journal |
| issn | 2251-600X 2423-5733 |
| language | fas |
| last_indexed | 2024-12-16T17:41:09Z |
| publishDate | 2011-12-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Advanced Materials in Engineering |
| spelling | doaj.art-458d9d20c4b14ee98265874787a837912022-12-21T22:22:36ZfasIsfahan University of TechnologyJournal of Advanced Materials in Engineering2251-600X2423-57332011-12-013025160Evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheetA. Azimi Dastgerdi0F. Ashrafizadeh1M. R. Toroghinejad2F. Shahriari3H. Zahraei4 Corresponding Author Address: Steel Institute of Isfahan University of Technology Department of Materials Engineering, Isfahan University of Technology Department of Materials Engineering, Isfahan University of Technology Mobarakeh Steel Company In this paper, bare spot defects in hot-dip galvanized sheets were studied in terms of the microstructure and their influence on the corrosion and mechanical properties. Surface characteristics and microstructural features were examined by scanning electron microscopy equipped with energy dispersive spectroscopy microanalysis system. The results showed that the major cause of the bare spots was the lack of wetability of the sheet surface due to contamination, improper heat treatment or chemical composition. Corrosion resistance was evaluated by standard salt spray test. Mechanical properties were examined by tensile testing. The time to red rust was much shorter on the bare spots as compared to other regions, but it appeared that bare spot defects had no significant effect on the mechanical properties of the galvanized steel sheets.http://jame.iut.ac.ir/article-1-528-en.htmlhot dip galvanizingbare spotsurface defectssalt spray testcorrosion resistance. |
| spellingShingle | A. Azimi Dastgerdi F. Ashrafizadeh M. R. Toroghinejad F. Shahriari H. Zahraei Evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheet Journal of Advanced Materials in Engineering hot dip galvanizing bare spot surface defects salt spray test corrosion resistance. |
| title | Evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheet |
| title_full | Evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheet |
| title_fullStr | Evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheet |
| title_full_unstemmed | Evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheet |
| title_short | Evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheet |
| title_sort | evaluation of bare spot defects in hot dip galvanizing and their influence on the properties of steel sheet |
| topic | hot dip galvanizing bare spot surface defects salt spray test corrosion resistance. |
| url | http://jame.iut.ac.ir/article-1-528-en.html |
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