Microstructure evolution during thermomechanical processing in 3Mn-0.1C medium-Mn steel
Medium-Mn steels are energetically investigated as a candidate of the third generation advanced high strength steels (AHSSs). However, their phase transformation and microstructaure evolution during various heat treatments and thermomechanical processing are still unclear. The present study first co...
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| Veröffentlicht in: | Materials science and technology 2019-11, Vol.35 (17), p.2101-2108 |
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| creator | Hou, Feifei Bai, Yu Shibata, Akinobu Tsuji, Nobuhiro |
| description | Medium-Mn steels are energetically investigated as a candidate of the third generation advanced high strength steels (AHSSs). However, their phase transformation and microstructaure evolution during various heat treatments and thermomechanical processing are still unclear. The present study first confirmed the kinetics of static phase transformation behaviour in a 3Mn-0.1C medium-Mn steel. Hot compression tests were also carried out to investigate the influence of high-temperature deformation of austenite on subsequent microstructure evolution. It was found that static ferrite transformation was quite slow in this steel, but ferrite transformation was greatly accelerated by the hot deformation in austenite and ferrite two-phase regions. Characteristic dual-phase microstructures composed of martensite and fine-grained ferrite were obtained, which exhibited superior mechanical properties.
This paper is part of a Thematic Issue on Medium Manganese Steels. |
| doi_str_mv | 10.1080/02670836.2018.1548099 |
| format | Article |
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| subjects | AHSS dual-phase EBSD ferrite transformation hot-compression mechanical property medium-Mn steel microstructure evolution |
| title | Microstructure evolution during thermomechanical processing in 3Mn-0.1C medium-Mn steel |
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