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