MATEC Web Conf.
Volume 188, 20185th International Conference of Engineering Against Failure (ICEAF-V 2018)
|Number of page(s)||8|
|Section||Metallic Materials II: Damage Accumulation, Structural Integrity, Advanced Manufacturing Techniques|
|Published online||07 August 2018|
The footprint of surface modification treatments on the corrosion-fatigue of AA7075-T651
Physical metallurgy Laboratory, Dept. of Mechanical Engineering, School of Engineering, Aristotle University of Thessaloniki,
2 Center for Research & Development on Advanced Materials – CERDAM, 57001 Thermi-Thessaloniki, Greece
3 National Corrosion and Materials Reliability Center, Texas A&M University, College Station, TX 77843-3003, USA
* Corresponding author: email@example.com
Different manufacturing and surface modification treatments distinctively affect the surface characteristics and microstructure of the workpiece, having a different impact on their effective life-span. The corrosion-fatigue behavior of as-machined (wire-EDM), blasted and anodized aluminum alloy 7075-T651 was investigated using 3.5wt% NaCl aqueous solution and distilled water as corrosive media. An in-situ corrosion-fatigue device capable of producing cyclic loads in a corrosive solution was employed, coupled with FEM analysis. Blasting process offered a prolongation of the corrosion-fatigue life-span in both corrosive media, when compared to the as-machined samples under identical conditions. Anodizing had a deleterious effect in all the examined cases.
© The Authors, published by EDP Sciences, 2018
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