Study on corrosion resistance of Al6061 aluminum alloy based on channel angle extrusion

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Corrosion resistance improves as the number of ECAP passes increases, yet declines at six passes due to grain size effects.
Microstructural analysis shows significant grain refinement and a uniform distribution of the secondary phase after treatment.
Electrochemical assessments confirm the relationship between grain size and corrosion resistance in Al6061 aluminum alloy.
Findings support optimization of surface protection strategies for aluminum alloys with proven empirical evidence.

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Experimental analysis reveals enhanced corrosion resistance with equal channel angular pressing, indicating optimal performance at four passes.

Tan et al. (2025) studied this question.

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Experimental analysis reveals enhanced corrosion resistance with equal channel angular pressing, indicating optimal performance at four passes.