| Issue |
MATEC Web Conf.
Volume 326, 2020
The 17th International Conference on Aluminium Alloys 2020 (ICAA17)
|
|
|---|---|---|
| Article Number | 03004 | |
| Number of page(s) | 9 | |
| Section | Strength, Plastic Deformation & Formability | |
| DOI | https://doi.org/10.1051/matecconf/202032603004 | |
| Published online | 05 November 2020 | |
A New Approach to Implement High Strength 7075 Aluminum for Automotive Application
Novelis Global Research and Technology Centre, 1950 Vaughn Rd NW, Kennesaw, GA, USA
* Corresponding author: cedric.wu@novelis.com
Aluminum alloys offer high specific strength than advanced high strength steels, making them preferred candidates for automotive light weighting. Among them, AA7075 aluminum alloy offers significantly higher strength than 5xxx and 6xxx alloys and is considered an attractive candidate by automotive OEMs for structural applications such as door intrusion beams, B pillars etc. There are several challenges in implementing AA7075, such as long artificial aging time to reach peak strength, joining method and corrosion resistance. In this study, an artificial aging practice that significantly reduces aging time was explored and its influence on mechanical properties of AA7075 was investigated in comparison with conventional peak age practice. In addition, this practice offers a potential solution for joining through self-piercing riveting. Moreover, the effect of artificial aging on corrosion, specifically intergranular corrosion (IGC) and stress corrosion cracking (SCC) was evaluated. The results are discussed with in depth analysis and correlation with microstructure.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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