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Effect of Q&P and Q&T Treatments on the Stability of Austenite and Mechanical Properties of Steel 0.2% C – 8.5% Mn – 3.0% Al

  • THERMAL AND THERMOMECHANICAL TREATMENT
  • Published:
Metal Science and Heat Treatment Aims and scope

The effect of quenching-partitioning (Q&P) and quenching-tempering (Q&T) treatments on the stability of austenite and mechanical properties of cold-rolled medium-manganese TRIP steel (0.2% C – 8.5% Mn – 3.0% Al – Fe) is studied. It is shown that the Q&T treatment provides an ultimate tensile strength σr = 1160 MPa and an elongation δ = 53%; the value of σr × δ = 61 GPa · %, which is lower than after the Q&P treatment (σr = 910 MPa, δ = 47% and σr × δ = 43 GPa · %). The elevated mechanical properties of the steel after the Q&T treatment are explained by the higher content of austenite in the structure and the more manifested TRIP effect during the deformation process.

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Notes

  1. Here and below in the article the content of elements is given in weight percent if not mentioned specially.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong, China

    Zhichao Li, Xinjing Li, Yanjie Mou, Lianfang He & Huiping Li

  2. Shandong Province Key Laboratory of Mine Mechanical Engineering, Shandong University of Science and Technology, Qingdao, Shandong, China

    Zhichao Li & Xin Zhang

  3. School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan, China

    Zhichao Li

  4. Mengshan Steel Structure Engineering Co. Ltd, Jining, Shandong, China

    Zhichao Li

  5. Laboratory for Excellence in Advanced Steel Research, Department of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, El Paso, USA

    Devesh Misra

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  1. Zhichao Li
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Correspondence to Zhichao Li.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 3 – 11, October, 2022.

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Li, Z., Li, X., Mou, Y. et al. Effect of Q&P and Q&T Treatments on the Stability of Austenite and Mechanical Properties of Steel 0.2% C – 8.5% Mn – 3.0% Al. Met Sci Heat Treat 64, 539–546 (2023). https://doi.org/10.1007/s11041-023-00848-8

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