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

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Effect of Die Coating on Friction Behavior of 7075 Aluminum Alloy Sheet in Hot Stamping

Authors
Y. P. Wang1, Y. L. Wang1, *, J. H. Li1, Y. S. Zhang1
1State Key Laboratory of Materials Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
*Corresponding author. Email: wangyilin@hust.edu.cn
Corresponding Author
Y. L. Wang
Available Online 2 March 2023.
DOI
10.2991/978-94-6463-114-2_32How to use a DOI?
Keywords
7075 aluminium alloy; Hot stamping; Die coating; Friction behaviour
Abstract

The rapid growth of automobile ownership has put tremendous pressure on the environment and energy, so it is particularly important to promote the lightweight of automobiles. Aluminum alloy is an ideal lightweight material with excellent comprehensive performance, which can improve the performance of parts while reducing weight. The application of hot stamping process for heat-treatable aluminum alloy sheets has solved the sever defects like cracking and springback during room temperature, and promoted the application of aluminum alloy. At present, one of the key issues that restricting the promotion of the aluminum alloy hot stamping process is the severe friction problem. At elevated temperatures, the aluminum alloy is easy to adhere to the die surfaces. The material transferred from the aluminum alloy will form bonding points on the die surface, scratch the sheet surface, and cause severe galling. Therefore, this paper takes 7075-T6 aluminum alloy sheets as the object, the friction behavior of boriding treatment, ta-C coating, and WC-a-C:H coating with H13 hot work die steel at elevated temperatures were studied. The results showed that the coatings all showed excellent lubricating effects at 300 ℃. Among them, the samples with boriding treatment have the minimum average friction coefficient at 300 ℃, and it shows the best anti-adhesion ability. The friction performance of the WC-a-C:H coating at 300 ℃ is more stable than the others.

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_32How 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  - Y. P. Wang
AU  - Y. L. Wang
AU  - J. H. Li
AU  - Y. S. Zhang
PY  - 2023
DA  - 2023/03/02
TI  - Effect of Die Coating on Friction Behavior of 7075 Aluminum Alloy Sheet in Hot Stamping
BT  - Proceedings of the 6th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2022)
PB  - Atlantis Press
SP  - 235
EP  - 242
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-114-2_32
DO  - 10.2991/978-94-6463-114-2_32
ID  - Wang2023
ER  -