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Optimized Segmentation of the 3D Microstructure in Cast Al-Si Piston Alloys

Bugelnig, Katrin and Germann, Holger and Steffens, Thomas and Plank, Bernhard and Wilde, Fabian and Boller, Elodie and Requena, Guillermo (2018) Optimized Segmentation of the 3D Microstructure in Cast Al-Si Piston Alloys. Praktische Metallographie-Practical Metallography, 55 (4), pp. 223-243. Carl Hanser Verlag. ISSN 0032-678X

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Abstract

The thermomechanical behavior of cast Al-Si piston alloys is highly dependent on the condition of the highly interconnected hybrid 3D network which is composed of primary and eutectic silicon and intermetallic phases which are found embedded in the α-Al matrix. The very similar X-ray absorption of silicon and the α-Al matrix is problematic for the local identification of these phases and thus for the accurate segmentation and characterization of all rigid phases in the network when laboratory X-ray tomographs are used. A combination of conventional X-ray computed tomography, synchrotron computed tomography, and chemical deep etching performed on the same alloy and at the same position allows for an automatic segmentation and a more accurate characterization of phases across large representative volumes and thus provides the information necessary for a quantification of the whole 3D microstructure of the alloys.

Item URL in elib:https://elib.dlr.de/122714/
Document Type:Article
Title:Optimized Segmentation of the 3D Microstructure in Cast Al-Si Piston Alloys
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bugelnig, KatrinKatrin.Bugelnig (at) dlr.deUNSPECIFIED
Germann, HolgerKS KolbenschmidtUNSPECIFIED
Steffens, ThomasKS KolbenschmidtUNSPECIFIED
Plank, BernhardFH Wels OÖUNSPECIFIED
Wilde, FabianDESYUNSPECIFIED
Boller, ElodieesrfUNSPECIFIED
Requena, GuillermoGuillermo.Requena (at) dlr.deUNSPECIFIED
Date:April 2018
Journal or Publication Title:Praktische Metallographie-Practical Metallography
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:55
Page Range:pp. 223-243
Publisher:Carl Hanser Verlag
ISSN:0032-678X
Status:Published
Keywords:3D Characterization, Tomography, Cast Al-Si Alloys
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Bugelnig, Katrin
Deposited On:08 Nov 2018 11:30
Last Modified:06 Sep 2019 15:22

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