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In-Situ Characterization of Deformation and Fracture Behavior of Hot-Rolled Medium Manganese Lightweight Steel

  • Characterization of Advanced High Strength Steels for Automobiles
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Abstract

The deformation and fracture behavior of hot-rolled medium manganese lightweight (0.32C-3.85Mn-4.18Al-1.53Si) steel was revealed by an in situ tensile test. Deformed δ-ferrite with plenty of cross-parallel deformation bands during in situ tensile tests provides δ-ferrite of good plasticity and ductility, although it is finally featured by the cleavage fracture. The soft and ductile δ-ferrite and high-volume fraction of austenite contribute to the superior mechanical properties of medium manganese lightweight steel heated at 800°C, with a tensile strength of 924 MPa, total elongation of 35.2% and product of the strength and elongation of 32.5 GPa %.

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Acknowledgements

Zhengzhi Zhao acknowledges the financial support from the National Natural Science Foundation of China (No. 51574028).

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Authors and Affiliations

  1. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, 100083, China

    Zheng-zhi Zhao, Rong-hua Cao, Ju-hua Liang, Feng Li & Cheng Li

  2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Shu-feng Yang

Authors
  1. Zheng-zhi Zhao
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  2. Rong-hua Cao
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  3. Ju-hua Liang
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  4. Feng Li
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  5. Cheng Li
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  6. Shu-feng Yang
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Correspondence to Shu-feng Yang.

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Zhao, Zz., Cao, Rh., Liang, Jh. et al. In-Situ Characterization of Deformation and Fracture Behavior of Hot-Rolled Medium Manganese Lightweight Steel. JOM 70, 700–705 (2018). https://doi.org/10.1007/s11837-018-2790-7

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  • DOI: https://doi.org/10.1007/s11837-018-2790-7

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