Corrosion Fatigue Study of 6061 Aluminum Alloy: The Effect of Coatings on the Fatigue Characteristics

• Published in: Metallurgical and materials transactions. A, Physical metallurgy and materials science Vol. 53; no. 8; pp. 2874 - 2889
• Main Authors: Chanyathunyaroj, Kittisak, Moonrin, Nakarin, Laungsopapun, Ghit, Phetchcrai, Sompob
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.08.2022; Springer Nature B.V
• Subjects: Alloys; Aluminum alloys; Aluminum base alloys; Anodizing; Atoms & subatomic particles; Base metal; Characterization and Evaluation of Materials; Chemistry and Materials Science; Coating effects; Corrosion effects; Corrosion fatigue; Corrosion resistance; Corrosion tests; Electrodeposition; Fatigue failure; Fatigue life; Fatigue limit; Fatigue strength; Materials Science; Mechanical properties; Metal fatigue; Metallic Materials; Nanotechnology; Original Research Article; Powder coating; Structural Materials; Surfaces and Interfaces; Tensile strength; Thin Films
• ISSN: 1073-5623; 1543-1940
• DOI: 10.1007/s11661-022-06712-3

This study proposes a method for protecting 6061 aluminum alloy from corrosion fatigue. Corrosion fatigue can reduce fatigue strength at the endurance limit (10 8 cycles) from 55 pct yield tensile strength (YTS) to less than 30 pct YTS. This study revealed that anodizing and powder coating, which are commonly used in industry to prevent base metal corrosion, do not protect against damage from corrosion fatigue. Introduction of electrodeposition after anodizing was found to improve the resistance to corrosion fatigue. Electrodeposition increased the fatigue lives of anodized specimens in both ambient and corrosive environments.