A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship
In the current work, we design a novel medium Mn steel with a superior mechanical property and no Lüders band. For industrial applications, a “low Mn addition” chemical composition and two kinds of different annealing processes with various initial microstructures were introduced. Consequently, the...
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MDPI AG
2023-06-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/6/936 |
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| author | Rendong Liu Zhiping Hu Chunqing Lin Dapeng Yang Xingli Gu Xin Xu Jinyu Guo |
| author_facet | Rendong Liu Zhiping Hu Chunqing Lin Dapeng Yang Xingli Gu Xin Xu Jinyu Guo |
| author_sort | Rendong Liu |
| collection | DOAJ |
| description | In the current work, we design a novel medium Mn steel with a superior mechanical property and no Lüders band. For industrial applications, a “low Mn addition” chemical composition and two kinds of different annealing processes with various initial microstructures were introduced. Consequently, the sample subjected to full austenitized quenching plus intercritical annealing process exhibited an outstanding mechanical property without the Lüders band. The microstructural evolution and austenite reverted transformation behavior were discussed in detail. In addition, austenite stability was estimated by chemistry stability and mechanical stabilization. It seemed that the austenite stability was significantly influenced by the morphological component. Thus, the sample with single lath-like ferrite and austenite exhibited the most excellent mechanical property. Furthermore, the “Lüders band” phenomenon was considered to rely on the restriction of martensitic recovery and recrystallization by lath-like morphology. The occurrence of the Lüders band was attributed to the low work-hardening ability caused by dynamic recovery. The formation of lath-like morphology could prevent the occurrence and propagation of the Lüders band by increasing the dislocation density and active TRIP effect. |
| first_indexed | 2024-03-11T02:36:17Z |
| format | Article |
| id | doaj.art-e7aa90cdce33411a903a3f9f05838bf8 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T02:36:17Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-e7aa90cdce33411a903a3f9f05838bf82023-11-18T09:56:49ZengMDPI AGCrystals2073-43522023-06-0113693610.3390/cryst13060936A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property RelationshipRendong Liu0Zhiping Hu1Chunqing Lin2Dapeng Yang3Xingli Gu4Xin Xu5Jinyu Guo6State Key Laboratory of Metal Material for Marine Equipment and Application, 63 Wuyi Road, Anshan 114009, ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, 63 Wuyi Road, Anshan 114009, ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, 63 Wuyi Road, Anshan 114009, ChinaThe State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, 63 Wuyi Road, Anshan 114009, ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, 63 Wuyi Road, Anshan 114009, ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, 63 Wuyi Road, Anshan 114009, ChinaIn the current work, we design a novel medium Mn steel with a superior mechanical property and no Lüders band. For industrial applications, a “low Mn addition” chemical composition and two kinds of different annealing processes with various initial microstructures were introduced. Consequently, the sample subjected to full austenitized quenching plus intercritical annealing process exhibited an outstanding mechanical property without the Lüders band. The microstructural evolution and austenite reverted transformation behavior were discussed in detail. In addition, austenite stability was estimated by chemistry stability and mechanical stabilization. It seemed that the austenite stability was significantly influenced by the morphological component. Thus, the sample with single lath-like ferrite and austenite exhibited the most excellent mechanical property. Furthermore, the “Lüders band” phenomenon was considered to rely on the restriction of martensitic recovery and recrystallization by lath-like morphology. The occurrence of the Lüders band was attributed to the low work-hardening ability caused by dynamic recovery. The formation of lath-like morphology could prevent the occurrence and propagation of the Lüders band by increasing the dislocation density and active TRIP effect.https://www.mdpi.com/2073-4352/13/6/936medium Mn steelmechanical propertyLüders bandmorphologyinitial microstructureTRIP effect |
| spellingShingle | Rendong Liu Zhiping Hu Chunqing Lin Dapeng Yang Xingli Gu Xin Xu Jinyu Guo A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship Crystals medium Mn steel mechanical property Lüders band morphology initial microstructure TRIP effect |
| title | A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship |
| title_full | A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship |
| title_fullStr | A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship |
| title_full_unstemmed | A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship |
| title_short | A Novel Design to Eliminate Lüders Band in Medium-Mn Steel and Its Microstructure-Property Relationship |
| title_sort | novel design to eliminate luders band in medium mn steel and its microstructure property relationship |
| topic | medium Mn steel mechanical property Lüders band morphology initial microstructure TRIP effect |
| url | https://www.mdpi.com/2073-4352/13/6/936 |
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