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Work Hardening Behavior and Stability of Retained Austenite for Quenched and Partitioned Steels

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Abstract

Both microstructure and mechanical properties of low alloy steels treated by quenching and partitioning (Q&P) process were examined. The mixed microstructure of martensite and large-fractioned retained austenite (about 27. 3%) was characterized and analyzed, excellent combinations of total elongation of 19% and tensile strength of 1835 MPa were obtained, and three-stage work hardening behavior was demonstrated during tensile test. The enhanced mechanical properties and work hardening behavior were explained based on the transformation-induced plasticity effect of large-fractioned austenite.

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Authors and Affiliations

  1. Central Iron and Steel Research Institute, 100081, Beijing, China

    Cun-yu Wang (Doctor, Senior Engineer), Wen-quan Cao & Han Dong

  2. Taiyuan Iron and Steel Group Co., Ltd., 030003, Taiyuan, Shanxi, China

    Cun-yu Wang (Doctor, Senior Engineer) & Yi-de Wang

  3. National Key Laboratory of Industrial Equipment Structural Analysis, School of Automotive Engineering, Dalian University of Technology, 116024, Dalian, Liaoning, China

    Ying Chang

  4. Society of Automotive Engineers of China, 100055, Beijing, China

    Jie Yang

Authors
  1. Cun-yu Wang
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  2. Ying Chang
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  3. Jie Yang
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  4. Wen-quan Cao
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  5. Han Dong
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  6. Yi-de Wang
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Correspondence to Cun-yu Wang.

Additional information

Foundation Item: Item Sponsored by Youth Science Funds of China (51101036); National Basic Research Program of China (2010CB630803); National Key Technology Support Program of China (2013BAE07B05)

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Wang, Cy., Chang, Y., Yang, J. et al. Work Hardening Behavior and Stability of Retained Austenite for Quenched and Partitioned Steels. J. Iron Steel Res. Int. 23, 130–137 (2016). https://doi.org/10.1016/S1006-706X(16)30024-3

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  • DOI: https://doi.org/10.1016/S1006-706X(16)30024-3

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