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

Effect of heat treatment temperature on microstructure evolution of aluminum silicon coating on hot-formed steel

Authors
Zhen Wang1, Rui Ge2, *, Huan Xiao2, Yibin Sun2
1Analytical and Testing Center, Wuhan University of Science and Technology, Wuhan, 430081, China
2Faculty of Materials, Wuhan University of Science and Technology, Wuhan, 430081, China
*Corresponding author. Email: gerui@wust.edu.cn
Corresponding Author
Rui Ge
Available Online 7 December 2024.
DOI
10.2991/978-94-6463-581-2_51How to use a DOI?
Keywords
Hot formed steel; Heat treatment temperature; Aluminum silicon coating; Microstructure evolution; Component distribution
Abstract

The present study delves into the influence of heat treatment temperature on microstructural and mechanical properties of aluminum silicon coatings applied to hot-formed steel substrates. Utilizing scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and microhardness testing, a comprehensive analysis was conducted. Additionally, the phase composition of the aluminum-silicon coatings at varying heat treatment temperatures was elucidated using Facts age software. The findings indicate that the heat treatment temperature significantly impacts the diffusion of Fe, Al, and Si elements within the coating, leading to an increase in the thickness of the diffusion layer in the substrate as the temperature rises. Notably, the distribution of silicon-rich layers in the coating shifts towards the surface with increasing temperature, and the decrease in the proportion of silicon atoms results in a phase transformation from the single-phase FeSiAl2 to a polyphase composition of Al13Fe4, Fe2SiAl2, and Al5Fe2. After heat treatment, the original austenite grains and martensitic laths undergo refinement, whereas the Vickers hardness of the substrate initially increases and subsequently decreases due to carbide precipitation. Consequently, considering the effects on diffusion layer thickness and matrix hardness, a heat treatment temperature of 950 ℃ is deemed optimal.

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_51How 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

TY  - CONF
AU  - Zhen Wang
AU  - Rui Ge
AU  - Huan Xiao
AU  - Yibin Sun
PY  - 2024
DA  - 2024/12/07
TI  - Effect of heat treatment temperature on microstructure evolution of aluminum silicon coating on hot-formed steel
BT  - Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
PB  - Atlantis Press
SP  - 412
EP  - 422
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-581-2_51
DO  - 10.2991/978-94-6463-581-2_51
ID  - Wang2024
ER  -