Rapid Heating Process of Ultra-high Strength Zinc-Coated Steel and Its Effect on Corrosion Resistance

DOI

10.2991/978-94-6463-114-2_27How to use a DOI?

Keywords

Hot stamping; High-strength zinc-coated steel; Rapid heating; Corrosion resistance

Abstract

The hot stamping technology of ultra-high-strength boron steel is the most direct and effective way to realize the lightweight of automobiles. The high-strength zinc-coated (GA) steel with dual functions of barrier protection and cathodic protection have broad application prospects in the field of boron steel hot stamping. The essential issue for industrial application of hot stamping zinc-iron coating plate is how to achieve the optimal balance between microstructure, morphology as well as protective performance of the coating and properties of the steel by adjusting the heat treatment procedure. Based on rapid heating technology, this paper investigated and established a step-type rapid heating process path that can achieve short-term alloying of the coating and less Zn loss while ensuring sufficient austenitization of the matrix. On this basis, the corrosion resistance of zinc-iron coating sheet metal was systematically investigated. The corrosion behavior and corrosion resistance of zinc-iron coatings under different conditions were comprehensively evaluated by electrochemical characteristic test and neutral salt spray corrosion test. The results indicate that the corrosion resistance of the coating under the step-by-step rapid heating process is better than that of the initial zinc-iron coating and the coating under the radiation heating process, and the corrosion resistance of the fully alloyed coating is better than that of the incomplete alloyed coating, and the corrosion resistance of the over-alloyed coatings will be poor.

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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TY  - CONF
AU  - Y. L. Wang
AU  - D. Y. Fang
AU  - K. Wang
AU  - Y. S. Zhang
PY  - 2023
DA  - 2023/03/02
TI  - Rapid Heating Process of Ultra-high Strength Zinc-Coated Steel and Its Effect on Corrosion Resistance
BT  - Proceedings of the 6th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2022)
PB  - Atlantis Press
SP  - 204
EP  - 210
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-114-2_27
DO  - 10.2991/978-94-6463-114-2_27
ID  - Wang2023
ER  -