Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)

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The effect of composite microalloying on the performance of hot press forming B-pillars

Authors
Mingtu Ma1, *, Yan Zhao2, Jingwei Li3, Gang Liu4, Xiang Tian1, Yu Cheng3
1China Automotive Engineering Research Institute Co., Ltd., Chongqing, 401122, China
2Beijing Institute of Technology Chongqing Innovation Center, Chongqing, 401120, China
3Zhongxin (Chongqing) Ultra High Strength Materials Research Institute Co., Ltd., Chongqing, 401120, China
4China Railway Modern Logistics Technology Co., Ltd., Beijing, 100089, China
*Corresponding author. Email: mingtuma@126.com
Corresponding Author
Mingtu Ma
Available Online 7 December 2024.
DOI
10.2991/978-94-6463-581-2_38How to use a DOI?
Keywords
Niobium-vanadium composite microalloying; Hot press forming B-pillar; Three-point bending; Trolley collision; Hydrogen embrittlement sensitivity index
Abstract

This article investigates the effect of niobium-vanadium composite microalloying on the performance of hot press forming B-pillars. Three-point bending experiments and trolley collision performance experiments on B-pillars were conducted. The results showed that during the three-point bending experiment on the B-pillar, the critical fracture strain increased from 0.537 of 22MnB5 to 0.857 of 22MnB5NbV; When the B-pillar fracture occurred, the displacement of the press head increased from 65mm to 82mm. During the trolley collision, the intrusion amount in the three key parts of the dummy’s chest, abdom, and public corresponding to the B-pillar is significantly decreased. The HESI (hydrogen embrittlement sensitivity index) was measured by sampling from three locations of the B-pillar, and 22MnB5NbV showed a significant decrease compared to 22MnB5. Composite microalloying effectively improves the safety of hot press forming B-pillars in the using, protects passenger space, and extending the service life of the B-pillar.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
Series
Atlantis Highlights in Material Sciences and Technology
Publication Date
7 December 2024
ISBN
978-94-6463-581-2
ISSN
2590-3217
DOI
10.2991/978-94-6463-581-2_38How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Mingtu Ma
AU  - Yan Zhao
AU  - Jingwei Li
AU  - Gang Liu
AU  - Xiang Tian
AU  - Yu Cheng
PY  - 2024
DA  - 2024/12/07
TI  - The effect of composite microalloying on the performance of hot press forming B-pillars
BT  - Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
PB  - Atlantis Press
SP  - 312
EP  - 318
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-581-2_38
DO  - 10.2991/978-94-6463-581-2_38
ID  - Ma2024
ER  -