Proceedings of the 6th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2022)

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Performance Evaluation and Application of the Laser Welded Joint with Filler Wire for Al-Si Coated Press-Hardened Steels

Authors
H. Pan1, 2, *, K. Ding3, Y. L. Gao3, T. H. Wu1, 2
1State Key Laboratory of Development and Application Technology of Automotive Steels (Baosteel Group), Shanghai, 201900, China
2Automobile Steel Research Institute R&D Center, Baoshan Iron and Steel Co., Ltd., Shanghai, 201900, China
3State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China
*Corresponding author. Email: hpan@baosteel.com
Corresponding Author
H. Pan
Available Online 2 March 2023.
DOI
10.2991/978-94-6463-114-2_25How to use a DOI?
Keywords
Laser welding; Press-hardened steel; Al-Si coating; Tensile strength; Fatigue
Abstract

Laser welding of Al-Si coated press-hardened steel (PHS) is considered as a challenge in its practical application due to the possible formation of bulk blocky ferrite in the weld metal (WM). In the present study, the relationship between the mechanical properties and the microstructure was investigated. The tensile test results showed that the tensile strength for the specimens ruptured in the gauge length were all over 1450 MPa accompanied with the elongation over 4%. Based on the fatigue tests, the fatigue strength by up-and-down method was around 9.2 × 103 N. The Charpy impact tests showed that the average obtained impact energy were all around 19 J for the welded joints at room temperature and decreased temperature as low as −40 °C. In particular, no obvious ferrite could be traced in the WM. In addition, the negligible microhardness fluctuation was considered as the main factor devoting to the superior comprehensive properties of the laser welded joint of Al-Si coated PHS. In this case, the automotive safety component of door ring with satisfied quality has been successfully fabricated.

Copyright
© 2023 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 6th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2022)
Series
Atlantis Highlights in Material Sciences and Technology
Publication Date
2 March 2023
ISBN
978-94-6463-114-2
ISSN
2590-3217
DOI
10.2991/978-94-6463-114-2_25How to use a DOI?
Copyright
© 2023 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  - H. Pan
AU  - K. Ding
AU  - Y. L. Gao
AU  - T. H. Wu
PY  - 2023
DA  - 2023/03/02
TI  - Performance Evaluation and Application of the Laser Welded Joint with Filler Wire for Al-Si Coated Press-Hardened Steels
BT  - Proceedings of the 6th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2022)
PB  - Atlantis Press
SP  - 185
EP  - 194
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-114-2_25
DO  - 10.2991/978-94-6463-114-2_25
ID  - Pan2023
ER  -