Microstructure and Mechanical Properties of Hot-Rolled Fe-Mn-C-Si TWIP Steel |
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| Authors: | ZHANG Li LIU Xiang-hai SHU Kang-ying |
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| Affiliation: | 1. Hangzhou Aichi Engineering Vehicles Co Ltd, Hangzhou 310018, Zhejiang, China
2. Department of Materials Seience and Engineering, China Jiliang University, Hangzhou 310018, Zhejiang, China |
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| Abstract: | Mechanical properties and microstructural evolution of the hot-rolled Fe-Mn-C-Si TWIP steel were investigated and the deformation mechanism was analyzed. The results showed that the tensile strength and elongation were about 1050 MPa and 60%, respectively. The hot-rolled steel had high specific energy absorption and impact toughness between -120 ℃ and 20 ℃. Some inhomogeneous dislocation zones were observed in the undeformed steel. Lots of deformation twins and twin-dislocation interactions were observed in the deformed steel. TWIP effect was the major deformation mechanism for the excellent mechanical properties. |
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| Keywords: | TWIP steel hot-rolling microstructure mechanical property deformation twin |
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