The influence of sub-temperature heating on the quenching microstructure and mechanical properties of 22MnB5 steel

YAO Xiaofeng; QI Haiquan; XIE Yingying; LI Xinxin; LI Xinru; LI Lamei

doi:10.7513/j.issn.1004-7638.2025.06.020

Volume 46 Issue 6

Dec. 2025

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YAO Xiaofeng, QI Haiquan, XIE Yingying, LI Xinxin, LI Xinru, LI Lamei. The influence of sub-temperature heating on the quenching microstructure and mechanical properties of 22MnB5 steel[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(6): 164-171. doi: 10.7513/j.issn.1004-7638.2025.06.020

Citation:

YAO Xiaofeng, QI Haiquan, XIE Yingying, LI Xinxin, LI Xinru, LI Lamei. The influence of sub-temperature heating on the quenching microstructure and mechanical properties of 22MnB5 steel[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(6): 164-171. doi: 10.7513/j.issn.1004-7638.2025.06.020

Citation:

YAO Xiaofeng, QI Haiquan, XIE Yingying, LI Xinxin, LI Xinru, LI Lamei. The influence of sub-temperature heating on the quenching microstructure and mechanical properties of 22MnB5 steel[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(6): 164-171. doi: 10.7513/j.issn.1004-7638.2025.06.020

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The influence of sub-temperature heating on the quenching microstructure and mechanical properties of 22MnB5 steel

doi: 10.7513/j.issn.1004-7638.2025.06.020

1.
School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China
2.
Key Laboratory of Optoelectronic Materials and Devices of Guangxi, Guilin 541004, Guangxi, China

More Information

Received Date: 2025-05-08
Accepted Date: 2025-06-19
Rev Recd Date: 2025-06-13

Available Online: 2025-12-31

Publish Date: 2025-12-31

Abstract

Abstract

The effect of different temperatures on the quenching microstructure and mechanical properties of 22MnB5 steel in the range of 680-930 ℃ were systematically studied by designing heat treatment processes with different heating temperatures and holding times. The results show that prolonged heating in the low-temperature zone (680-700 ℃) leads to material softening, and prolonged heating in the high-temperature zone (850-930 ℃) has limited improvement in mechanical properties. However, prolonged heating in the sub-temperature temperatures zone (720-820 ℃) results in a significant improvement in the mechanical properties. Particularly, the tensile and yield strengths reached 1 589 MPa and 1078 MPa after quenching at 820 ℃ for 20 min, which were 151.02% and 132.82% higher than the initial state, respectively. The study shows that by optimizing the sub-temperature heating process, the tensile strength of 22MnB5 steel can be obtained at a level of 1500 MPa at a lower temperature than the existing processes, which provides a new approach to solving the problem in the existing hot forming technologies.
- 22MnB5 steel,
- boron micro-alloyed steel,
- heating process,
- quenching microscopic structure,
- mechanical properties

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References(21)

References

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