Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese Minerals
In this work, manganese and niobium were added to high-chromium white cast iron, from which drilling and grinding tools were made. Two melts with different proportions of manganese and niobium (manganese 2.75% and niobium 0.49%, manganese 3.5% and niobium 1.1%) were used. High-chromium white cast i...
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Al-Khwarizmi College of Engineering – University of Baghdad
2025-03-01
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| Series: | Al-Khawarizmi Engineering Journal |
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| Online Access: | https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/1005 |
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| author | Ali Hatra Ahmad Salamah Nassim Aldaher |
| author_facet | Ali Hatra Ahmad Salamah Nassim Aldaher |
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In this work, manganese and niobium were added to high-chromium white cast iron, from which drilling and grinding tools were made. Two melts with different proportions of manganese and niobium (manganese 2.75% and niobium 0.49%, manganese 3.5% and niobium 1.1%) were used. High-chromium white cast iron is considered one of the most important alloys in heavy-duty applications, and its properties are affected by the added alloying elements and heat treatment. Niobium can increase corrosion resistance and hardness, form carbides, enhance thermal conductivity and improve response to heat treatment. As for manganese, it can increase impact toughness, remove oxygen from iron oxide and reduce flexibility. The heat treatment was carried out in accordance with two different programmes: 1- heating to 950 °C with a holding period of 2 h and cooling in atmospheric air; 2- heating to 960 °C with a holding period of 20 min, then cooling in the oven and returning to 425 °C for 3 h. The mechanical properties, such as wear resistance, impact durability and hardness, before and after heat treatments 1 and 2 were compared.
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| format | Article |
| id | doaj-art-19175280bfa342f1a35ef3c6dd56f295 |
| institution | DOAJ |
| issn | 1818-1171 2312-0789 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Al-Khwarizmi College of Engineering – University of Baghdad |
| record_format | Article |
| series | Al-Khawarizmi Engineering Journal |
| spelling | doaj-art-19175280bfa342f1a35ef3c6dd56f2952025-08-20T03:17:35ZengAl-Khwarizmi College of Engineering – University of BaghdadAl-Khawarizmi Engineering Journal1818-11712312-07892025-03-0121110.22153/kej.2025.02.001Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese MineralsAli Hatra0Ahmad Salamah1Nassim Aldaher2Department of Production and Design Engineering, Faculty of Mechanical and Electrical Engineering, University of Tishreen, Lattakia, SyriaDepartment of Production and Design Engineering, Faculty of Mechanical and Electrical Engineering, University of Tishreen, Lattakia, SyriaDepartment of Mechanics, Faculty of Mechanical and Electrical Engineering, University of Tishreen, Lattakia, Syriao In this work, manganese and niobium were added to high-chromium white cast iron, from which drilling and grinding tools were made. Two melts with different proportions of manganese and niobium (manganese 2.75% and niobium 0.49%, manganese 3.5% and niobium 1.1%) were used. High-chromium white cast iron is considered one of the most important alloys in heavy-duty applications, and its properties are affected by the added alloying elements and heat treatment. Niobium can increase corrosion resistance and hardness, form carbides, enhance thermal conductivity and improve response to heat treatment. As for manganese, it can increase impact toughness, remove oxygen from iron oxide and reduce flexibility. The heat treatment was carried out in accordance with two different programmes: 1- heating to 950 °C with a holding period of 2 h and cooling in atmospheric air; 2- heating to 960 °C with a holding period of 20 min, then cooling in the oven and returning to 425 °C for 3 h. The mechanical properties, such as wear resistance, impact durability and hardness, before and after heat treatments 1 and 2 were compared. https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/1005Wear; impact toughness; hardness; grinding; high-chromium white cast iron; cracking |
| spellingShingle | Ali Hatra Ahmad Salamah Nassim Aldaher Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese Minerals Al-Khawarizmi Engineering Journal Wear; impact toughness; hardness; grinding; high-chromium white cast iron; cracking |
| title | Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese Minerals |
| title_full | Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese Minerals |
| title_fullStr | Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese Minerals |
| title_full_unstemmed | Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese Minerals |
| title_short | Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese Minerals |
| title_sort | effect of heat treatment on the microstructure impact toughness and hardness of high chromium white cast iron with added niobium and manganese minerals |
| topic | Wear; impact toughness; hardness; grinding; high-chromium white cast iron; cracking |
| url | https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/1005 |
| work_keys_str_mv | AT alihatra effectofheattreatmentonthemicrostructureimpacttoughnessandhardnessofhighchromiumwhitecastironwithaddedniobiumandmanganeseminerals AT ahmadsalamah effectofheattreatmentonthemicrostructureimpacttoughnessandhardnessofhighchromiumwhitecastironwithaddedniobiumandmanganeseminerals AT nassimaldaher effectofheattreatmentonthemicrostructureimpacttoughnessandhardnessofhighchromiumwhitecastironwithaddedniobiumandmanganeseminerals |