Study on the Color Transformation Law of Al-Si Coating with Different Weight After Press Hardening

DOI

10.2991/978-94-6463-114-2_23How to use a DOI?

Keywords

Al-Si coating; Press hardening; Color transformation

Abstract

For Al-Si coated press hardening steel, the users preliminarily determine whether the parts meet the requirements according to their color after press hardening. The color is not only related to press hardening conditions such as heating atmosphere and process, but also to the weight of Al-Si coating. In this work, the color transformation law of Al-Si coating with different weight after press hardening was studied under the common heating atmosphere (air), and the appropriate color range was determined in combination with the changes in the coating structure and properties after press hardening. In this work, samples of Al-Si coating with different weight were prepared from the Al-Si production line, and the box-type resistance furnace and plate quenching press were used to simulate the heating and press hardening process of production line, and the Hunter Lab color tester was used to detect the color of the final samples, and the scanning electron microscope and energy spectrum analyzer were used to analyze the coating structure, coating composition after press hardening. The results show that: (1) The color transformation law of Al-Si coating with different weight after press hardening: AS40 and AS80 are silver-brown-blue-yellow-red, while the AS150 is silver- yellow/red-blue-yellow-red; (2) In order to ensure a suitable alloying level, for AS40 and AS80, the preferred heating process is (900–930 °C) + (3–7 min), and the preferred color is brown-blue, but for AS150, the preferred heating process is (900– 930 °C) + (4– 7 min), and the preferred color is blue, and the Lab values of the three kinds of coating are L ≤ 40 and a ≤ 1 and b ≤ 0.

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  - S. L. Zhou
AU  - Z. J. Deng
AU  - W. Yan
AU  - X. F. Zheng
PY  - 2023
DA  - 2023/03/02
TI  - Study on the Color Transformation Law of Al-Si Coating with Different Weight After Press Hardening
BT  - Proceedings of the 6th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2022)
PB  - Atlantis Press
SP  - 166
EP  - 175
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-114-2_23
DO  - 10.2991/978-94-6463-114-2_23
ID  - Zhou2023
ER  -