Optimization of alloying element types and contents in high strength and high toughness bainitic steels
Currently, the high alloy content of bainitic steels imparts excellent properties but also leads to problems such as high cost of production and difficulties in recycling and reuse. This study investigates the optimization of alloying element types and contents in bainitic steels through a continuou...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424030321 |
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| author | Ranran Zhu Xiaoyan Long Fucheng Zhang Zhinan Yang Yanguo Li Yan Yang Yifei Wang |
| author_facet | Ranran Zhu Xiaoyan Long Fucheng Zhang Zhinan Yang Yanguo Li Yan Yang Yifei Wang |
| author_sort | Ranran Zhu |
| collection | DOAJ |
| description | Currently, the high alloy content of bainitic steels imparts excellent properties but also leads to problems such as high cost of production and difficulties in recycling and reuse. This study investigates the optimization of alloying element types and contents in bainitic steels through a continuous cooling heat treatment process of the three tested steels, employing characterization techniques including optical microscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and electron backscatter diffraction. Results indicate that adjusting alloy ratios allows steel without adding precious elements to achieve comparable properties to those containing precious elements. MnAl–1Si and MnSi–1Al steels have a very small volume fraction of retained austenite and are predominantly thin-film, which improves their impact toughness and reduces elongation. Additionally, MnAl–1Si steel shows thinner laths thickness and higher dislocation density, so its strength is increased. This study suggests that reducing alloy types and amounts presents a viable approach to sustainable manufacturing practices. |
| format | Article |
| id | doaj-art-cbad3c43639e4e83b3d9f3afd835fe86 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-cbad3c43639e4e83b3d9f3afd835fe862025-01-19T06:25:53ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013427282739Optimization of alloying element types and contents in high strength and high toughness bainitic steelsRanran Zhu0Xiaoyan Long1Fucheng Zhang2Zhinan Yang3Yanguo Li4Yan Yang5Yifei Wang6State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, China; Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou, Guangdong, 510725, China; Corresponding author. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China.Hebei Iron and Steel Laboratory, North China University of Science and Technology, Tangshan, Hebei, 063210, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, China; Hebei Iron and Steel Laboratory, North China University of Science and Technology, Tangshan, Hebei, 063210, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, China; Corresponding author.Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou, Guangdong, 510725, ChinaGuangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment, Guangzhou Maritime University, Guangzhou, Guangdong, 510725, ChinaCurrently, the high alloy content of bainitic steels imparts excellent properties but also leads to problems such as high cost of production and difficulties in recycling and reuse. This study investigates the optimization of alloying element types and contents in bainitic steels through a continuous cooling heat treatment process of the three tested steels, employing characterization techniques including optical microscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and electron backscatter diffraction. Results indicate that adjusting alloy ratios allows steel without adding precious elements to achieve comparable properties to those containing precious elements. MnAl–1Si and MnSi–1Al steels have a very small volume fraction of retained austenite and are predominantly thin-film, which improves their impact toughness and reduces elongation. Additionally, MnAl–1Si steel shows thinner laths thickness and higher dislocation density, so its strength is increased. This study suggests that reducing alloy types and amounts presents a viable approach to sustainable manufacturing practices.http://www.sciencedirect.com/science/article/pii/S2238785424030321Bainitic steelAlloying element typesStrengthToughnessRetained austenite |
| spellingShingle | Ranran Zhu Xiaoyan Long Fucheng Zhang Zhinan Yang Yanguo Li Yan Yang Yifei Wang Optimization of alloying element types and contents in high strength and high toughness bainitic steels Journal of Materials Research and Technology Bainitic steel Alloying element types Strength Toughness Retained austenite |
| title | Optimization of alloying element types and contents in high strength and high toughness bainitic steels |
| title_full | Optimization of alloying element types and contents in high strength and high toughness bainitic steels |
| title_fullStr | Optimization of alloying element types and contents in high strength and high toughness bainitic steels |
| title_full_unstemmed | Optimization of alloying element types and contents in high strength and high toughness bainitic steels |
| title_short | Optimization of alloying element types and contents in high strength and high toughness bainitic steels |
| title_sort | optimization of alloying element types and contents in high strength and high toughness bainitic steels |
| topic | Bainitic steel Alloying element types Strength Toughness Retained austenite |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424030321 |
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