Effect of Cu content on tensile behavior of Al-Zn-Mg-(Cu) alloys after alternate immersion
Source abstract
Abstract
The effect of Cu content on the tensile behavior of Al-Zn-Mg-(Cu) alloys following alternate immersion was examined by electron backscatter diffraction, optical microscopy, scanning electron microscopy, scanning transmission electron microscopy, and scanning Kelvin probe force microscopy. As the Cu content rises from 0 wt% to 2.6 wt%, a notable decline in corrosion resistance is observed, which consequently leads to a gradual increase in the loss rate of both strength and elongation after alternate immersion. The corrosion mechanisms were investigated by the analysis of the Volta potential difference between the second phase and the matrix, as well as the distribution characteristics of grain boundary precipitates and precipitate-free zones. Interestingly, alloys with the Cu content below 1.0 wt% demonstrate a slight enhancement in yield strength following alternate immersion, rather than the anticipated decrease. This phenomenon was discussed by digital image correlation and force analysis.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Aluminum Alloys Composites Properties · Metal Forming Simulation Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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