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Characterization of Laser Powder Bed Fusion of Nickel-Based Superalloy Haynes 282
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (KAMPT)
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (KAMPT)ORCID iD: 0000-0001-5907-4061
University West, Department of Engineering Science, Division of Welding Technology. (KAMPT)ORCID iD: 0000-0002-4598-4790
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (KAMPT)ORCID iD: 0000-0002-2185-1774
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2023 (English)In: Proceedings of the 10th International Symposium on Superalloy 718 and Derivatives / [ed] Eric A. Ott, Joel Andersson, Chantal Sudbrack, Zhongan Bi, Kevin Bockenstedt, Ian Dempster, Michael Fahrmann, Paul Jablonski, Michael Kirka, Xingbo Liu, Daisuke Nagahama, Tim Smith, Martin Stockinger, Andrew Wessman, Springer, 2023, p. 553-570Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Nickel-based superalloy Haynes 282 specimens were manufactured using the Laser Powder Bed Fusion process with a powder layer thickness of 60 and 90 microns to study the effect of laser power, laser scan speed, and hatch distance on the melt pool dimensions and porosity. The melt pool dimensions and porosity were measured at the center of the cubes parallel to the build direction. Variation of melt pool depth and overlap exist within the same sample signifying the scatter present in the process. Laser scan speed was found to be the most significant parameter for porosity and hatch distance was found to be the most significant parameter affecting the average melt pool overlap depth in the cubes built with 60 microns layer thickness. Interaction of speed and hatch distance was found to be the most significant parameter for porosity and Laser scan speed was the most significant parameter for average melt pool overlap depth in cubes built with 90 microns layer thickness. Comparison of measured responses with individual parameters provides partial trends of melt pool dimensions and porosity. As the heat input is captured better in line energy and area energy density, a better trend of the melt pool dimensions data and marginal trend of porosity in comparison with energy densities is discussed. The ratio of maximum length to minimum length of defects such as porosity and lack of fusion is measured to determine the shape of the defects and averaged to provide insight into the dominant shape of defect for a given set of parameters.

Place, publisher, year, edition, pages
Springer, 2023. p. 553-570
Series
The Minerals, Metals & Materials Series (MMMS), ISSN 2367-1181, E-ISSN 2367-1696 ; 4
Keywords [en]
Haynes 282, Laser powder bed fusion, Melt pool dimensions, High layer thickness, Process parameter study
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-20175DOI: 10.1007/978-3-031-27447-3_35Scopus ID: 2-s2.0-85161408360ISBN: 978-3-031-27446-6 (print)ISBN: 978-3-031-27447-3 (electronic)OAI: oai:DiVA.org:hv-20175DiVA, id: diva2:1776198
Conference
TMS Annual Meeting & Exhibition 2023
Available from: 2023-06-27 Created: 2023-06-27 Last updated: 2024-01-04Bibliographically approved

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Swaminathan, KameshwaranOlsson, JonasRaza, TahiraHarlin, PeterAndersson, Joel

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