Microstructure and Mechanical Properties of Ultrafine-Grained Dual-Phase 0.1C3Mn Steel Processed by Warm Deformation
In this study, we have explored the thermomechanical processing on 0.1C3Mn steel to produce an ultrafine-grained (UFG) dual-phase (DP) microstructure. The composition was designed to allow a decrease in temperature for the warm deformation of austenite. It was found that the warm deformation of aust...
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2025-06-01
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| author | Yongkang Wang Chenglu Liu Qingquan Lai |
| author_facet | Yongkang Wang Chenglu Liu Qingquan Lai |
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| description | In this study, we have explored the thermomechanical processing on 0.1C3Mn steel to produce an ultrafine-grained (UFG) dual-phase (DP) microstructure. The composition was designed to allow a decrease in temperature for the warm deformation of austenite. It was found that the warm deformation of austenite induced a dramatic ferrite transformation, in contrast to the absence of the formation of ferrite in the well-annealed state. Compression by 60% at 650 °C resulted in the generation of a UFG-DP microstructure with a ferrite grain size of 1.4 μm and a ferrite volume fraction of 62%. The UFG-DP 0.1C3Mn steel presents a good combination of strength, ductility and fracture resistance, and the fracture strain of the UFG-DP is higher than the as-quenched low-carbon martensite. The high fracture strain of the UFG-DP could be attributed to delayed void nucleation and constrained void growth, as revealed by the quantitative X-ray tomography. |
| format | Article |
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| institution | DOAJ |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-06-01 |
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| spelling | doaj-art-839a5eb1e16a4f8a87f0438f453c2b262025-08-20T03:08:06ZengMDPI AGMetals2075-47012025-06-0115769910.3390/met15070699Microstructure and Mechanical Properties of Ultrafine-Grained Dual-Phase 0.1C3Mn Steel Processed by Warm DeformationYongkang Wang0Chenglu Liu1Qingquan Lai2Key Laboratory for Light-Weight Materials, Nanjing Tech University, Nanjing 211816, ChinaKey Laboratory for Light-Weight Materials, Nanjing Tech University, Nanjing 211816, ChinaKey Laboratory for Light-Weight Materials, Nanjing Tech University, Nanjing 211816, ChinaIn this study, we have explored the thermomechanical processing on 0.1C3Mn steel to produce an ultrafine-grained (UFG) dual-phase (DP) microstructure. The composition was designed to allow a decrease in temperature for the warm deformation of austenite. It was found that the warm deformation of austenite induced a dramatic ferrite transformation, in contrast to the absence of the formation of ferrite in the well-annealed state. Compression by 60% at 650 °C resulted in the generation of a UFG-DP microstructure with a ferrite grain size of 1.4 μm and a ferrite volume fraction of 62%. The UFG-DP 0.1C3Mn steel presents a good combination of strength, ductility and fracture resistance, and the fracture strain of the UFG-DP is higher than the as-quenched low-carbon martensite. The high fracture strain of the UFG-DP could be attributed to delayed void nucleation and constrained void growth, as revealed by the quantitative X-ray tomography.https://www.mdpi.com/2075-4701/15/7/699Ultrafine-grained steelsdual-phase steelsthermomechanical processingferrite transformationmechanical properties |
| spellingShingle | Yongkang Wang Chenglu Liu Qingquan Lai Microstructure and Mechanical Properties of Ultrafine-Grained Dual-Phase 0.1C3Mn Steel Processed by Warm Deformation Metals Ultrafine-grained steels dual-phase steels thermomechanical processing ferrite transformation mechanical properties |
| title | Microstructure and Mechanical Properties of Ultrafine-Grained Dual-Phase 0.1C3Mn Steel Processed by Warm Deformation |
| title_full | Microstructure and Mechanical Properties of Ultrafine-Grained Dual-Phase 0.1C3Mn Steel Processed by Warm Deformation |
| title_fullStr | Microstructure and Mechanical Properties of Ultrafine-Grained Dual-Phase 0.1C3Mn Steel Processed by Warm Deformation |
| title_full_unstemmed | Microstructure and Mechanical Properties of Ultrafine-Grained Dual-Phase 0.1C3Mn Steel Processed by Warm Deformation |
| title_short | Microstructure and Mechanical Properties of Ultrafine-Grained Dual-Phase 0.1C3Mn Steel Processed by Warm Deformation |
| title_sort | microstructure and mechanical properties of ultrafine grained dual phase 0 1c3mn steel processed by warm deformation |
| topic | Ultrafine-grained steels dual-phase steels thermomechanical processing ferrite transformation mechanical properties |
| url | https://www.mdpi.com/2075-4701/15/7/699 |
| work_keys_str_mv | AT yongkangwang microstructureandmechanicalpropertiesofultrafinegraineddualphase01c3mnsteelprocessedbywarmdeformation AT chengluliu microstructureandmechanicalpropertiesofultrafinegraineddualphase01c3mnsteelprocessedbywarmdeformation AT qingquanlai microstructureandmechanicalpropertiesofultrafinegraineddualphase01c3mnsteelprocessedbywarmdeformation |