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  Ridging and color changes of aluminum sheets during plastic straining

Raabe, D., & Sachtleber, M.(n.d.). Ridging and color changes of aluminum sheets during plastic straining.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-6735-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-6737-D
Genre: Report

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edoc_coating_color.pdf (Any fulltext), 679KB
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edoc_coating_color.pdf
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 Creators:
Raabe, D.1, Author              
Sachtleber, M.2, Author              
Affiliations:
1Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
2Microscopy and Diffraction, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863391              

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Free keywords: electron backscattering diffraction, roughness, aluminum, coating, sheet forming, surface mechanics, surface characterization, colorimetry, roping, ridging, color changes, texture, EBSD, surface strains
 Abstract: The project report presents experimental results about surface roughening and color changes of coated (siloxane, soft anodic, epoxy) 6022-T4 aluminum sheets during plastic straining. Experiments are carried out using confocal microscopy and colorimetry. It is found that surface roughening of coated aluminium sheets during plastic deformation is a pronounced function of strain. Different strain regimes and loading modes can lead to different roughening mechanisms. This is indicated by changes in the slope of the roughness-strain curves. The roughening behavior of coated aluminium sheets can substantially differ from that of uncoated sheets of the same substrate material owing to the mechanical properties of the coatings. The coatings which differ in lightness and color values due to their layer thickness and chemical composition can in part undergo substantial changes in these values during straining. Small plastic strains affect in particular changes in color lightness.

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Language(s): eng - English
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 Publication Status: Not specified
 Pages: -
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 Identifiers: eDoc: 119310
 Degree: -

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Title: Surface roughening and color changes of coated 6022-T4 aluminum sheets during plastic straining
Place of Event: MPI für Eisenforschung GmbH, Düsseldorf, Germany
Start-/End Date: 2004

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