PSI - Issue 66

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2025) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 66 (2024) 161–166

8th International Conference on Crack Paths Fatigue Design Recommendations for Anodised Aluminium Alloys A6061 Miu Hayashi a , Takeshi Ando a , Yuki Ogawa a , Hiroyuki Akebono a* , Atsushi Sugeta a a Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, 739-8527, Japan Abstract Aluminium alloys are widely used in products such as bicycles and automobiles because of their light weight and low cost. However, because the surface is easily scratched and corroded, an anodisation treatment is used to improve corrosion and wear resistance. Although anodisation treatment decreases fatigue strength, there are few reports on its fatigue properties, especially under tension–compression conditions. Therefore, in this study, aluminium alloys with and without anodisation were prepared and subjected to fatigue tests to examine the effect of anodisation on the fatigue properties and elucidate the fatigue fracture mechanism. Consequently, cracking in the anodised layer was found to be a negative factor that decreased the fatigue strength. However, when the specimens did not crack owing to the anodised layer in the fatigue test, anodising hardly affected the fatigue strength. © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers Keywords: Fatigue, Anodisation, Aluminium Alloy 1. Introduction Aluminium alloys are widely used in automobiles and bicycles because of their superior features, such as light weight, low cost, easily recyclable, and high processability. However, because their surfaces are easily scratched and corroded, many products are subjected to surface treatments. Among the various surface treatments, anodising is used to improve corrosion and wear resistance. Anodising is an electrochemical process that converts a metal surface into a decorative, durable, and corrosion-resistant anodic oxide. Generally, anodising treatment decreases the © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers

* Corresponding author. Tel.:+81 82-424-7538. E-mail address: akebono@hiroshima-u.ac.jp

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2024 Organizers 10.1016/j.prostr.2024.11.066