SEM-EDX-based characterization of ductile damage in sheet metal forming of Al-Mg-Si alloy
Annemarie HEISER, Jonas WERNER, Martina MÜLLER, Thomas BERGS, Alexander SCHWEDT, Emad SCHARIFI, David BAILLY
Abstract. In sheet metal forming processes like deep drawing, tensile stress dominates, leading to positive triaxiality and ductile damage evolution. Understanding the correlation between load path and damage evolution enables control and minimization of damage during forming. This study investigates damage evolution during deep drawing at room temperature and deep drawing at solution heat treatment temperature with and without gas counter pressure of aluminum alloy AA6010. An SEM-EDX-based void analysis method, initially applied for particle detection, is adapted for analyzing damage in an Al-Mg-Si alloy. Voids are characterized via field emission SEM, using greyscale thresholding in BSE images for selective EDX-spectrum acquisition and subsequent classification. It is shown that cold-formed samples exhibit an overall higher level of damage compared to hot-formed samples. In cold forming damage is dominated by void nucleation and growth at fractured iron-rich inclusions, whereas in hot forming particle-matrix decohesion can be observed.
Keywords
Sheet Metal Forming, Damage Characterization, Aluminum
Published online 5/7/2025, 9 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Annemarie HEISER, Jonas WERNER, Martina MÜLLER, Thomas BERGS, Alexander SCHWEDT, Emad SCHARIFI, David BAILLY, SEM-EDX-based characterization of ductile damage in sheet metal forming of Al-Mg-Si alloy, Materials Research Proceedings, Vol. 54, pp 1158-1166, 2025
DOI: https://doi.org/10.21741/9781644903599-126
The article was published as article 126 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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