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Characterization of Hastelloy X Produced by Laser Powder Bed Additive Manufacturing
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-8304-0221
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering. Siemens Industrial Turbomachinery AB, Finspång, Sweden.
2016 (English)In: World PM2016 Proceedings, EPMA , 2016, 1-6 p.Conference paper, Published paper (Refereed)
Abstract [en]

The grain structure of the selective laser melting (SLM) material is complicated and cannot easily be resolved by etching of the as-manufactured surface. One method to reveal the true morphology is by performing an electron backscatter diffraction (EBSD) analysis of the material. An analysis of the SLM material is reported. The analysis reveals that the grain structure is very complicated and the grain size is non-uniform. The microstructure contains large grains with multiple low angle grain boundaries together with small grains that approach nanometre size in the smallest size range. Grains are to a large extent, not equiaxed, but rather elongated.

Varying degrees of texture in different regions of the material have been observed. The degree of texture coincides with material volumes manufactured with different process parameter settings. Also areas with and without indications of texture have shown to exhibit different hardness. This is an indication of variation in mechanical properties in the different material volumes. Thin-walled areas, surface regions of solid material and lattices constitutes one group with similar microstructure indicating one class of material and secondly the bulk material with another microstructure would constitute the other material class

Place, publisher, year, edition, pages
EPMA , 2016. 1-6 p.
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-132934ISBN: 978-1-899072-48-4 (electronic)OAI: oai:DiVA.org:liu-132934DiVA: diva2:1051502
Conference
World PM2016 - Powder Metallurgy World Congress & exhibition, Hamburg, Germany, October 9-13, 2016
Available from: 2016-12-02 Created: 2016-12-02 Last updated: 2016-12-07Bibliographically approved

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Saarimäki, JonasLundberg, MattiasMoverare, JohanBrodin, Håkan
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CiteExportLink to record
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