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Conference Paper/Proceeding/Abstract 1213 views

Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test

Spencer Jeffs, Robert Lancaster Orcid Logo, Sean Davies

Key Engineering Materials, Volume: 734, Pages: 128 - 136

Swansea University Author: Robert Lancaster Orcid Logo

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DOI (Published version): 10.4028/www.scientific.net/KEM.734.128

Abstract

Direct Laser Deposition (DLD) is a modern Additive Layer Manufacturing (ALM) technology that offers the possibility of lean manufacture and the ability to produce near-net shape components with complex geometries. Anisotropic microstructures are typically produced due to thermal cycles that occur du...

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Published in: Key Engineering Materials
ISSN: 1013-9826
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa31866
first_indexed 2017-02-06T14:42:15Z
last_indexed 2018-02-09T05:19:11Z
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spelling 2017-03-02T11:45:23.7382222 v2 31866 2017-02-06 Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test e1a1b126acd3e4ff734691ec34967f29 0000-0002-1365-6944 Robert Lancaster Robert Lancaster true false 2017-02-06 EAAS Direct Laser Deposition (DLD) is a modern Additive Layer Manufacturing (ALM) technology that offers the possibility of lean manufacture and the ability to produce near-net shape components with complex geometries. Anisotropic microstructures are typically produced due to thermal cycles that occur during the layer by layer process, resulting in epitaxial grains forming along the build direction. Therefore, build direction, whether horizontal (0°) or vertical (90°), may have a pronounced effect upon mechanical properties. While, it is generally accepted that the mechanical properties of cast materials are well understood, the same cannot be said for materials produced using DLD. Although, mechanical testing of materials usually dictates the use of round bar specimens, due to the cost of manufacture and fundamental nature of this study a miniaturised test technique better lends itself to characterise the cast and DLD built alloys’ properties. The Small Punch (SP) creep test is a widely utilised miniaturised test technique for characterising and ranking the creep response of metallic material properties when large quantities may not be readily available. This paper will apply the SP creep test to characterise the properties of DLD variants of the nickel based superalloy C263 in comparison to the traditional cast material. Tests were performed at elevated temperatures akin to those experienced in service. Interpretation of the microstructures and SP creep results has been carried out; relating build direction, microstructures, minimum displacement rate and time to rupture. Conference Paper/Proceeding/Abstract Key Engineering Materials 734 128 136 1013-9826 C263, Direct Laser Deposition, Heat Treatments, Small Punch Creep 1 4 2017 2017-04-01 10.4028/www.scientific.net/KEM.734.128 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2017-03-02T11:45:23.7382222 2017-02-06T09:24:47.4824833 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Spencer Jeffs 1 Robert Lancaster 0000-0002-1365-6944 2 Sean Davies 3
title Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test
spellingShingle Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test
Robert Lancaster
title_short Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test
title_full Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test
title_fullStr Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test
title_full_unstemmed Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test
title_sort Effect of Build Orientation and Post Processing of a Direct Laser Deposited Nickel Superalloy as Determined by the Small Punch Creep Test
author_id_str_mv e1a1b126acd3e4ff734691ec34967f29
author_id_fullname_str_mv e1a1b126acd3e4ff734691ec34967f29_***_Robert Lancaster
author Robert Lancaster
author2 Spencer Jeffs
Robert Lancaster
Sean Davies
format Conference Paper/Proceeding/Abstract
container_title Key Engineering Materials
container_volume 734
container_start_page 128
publishDate 2017
institution Swansea University
issn 1013-9826
doi_str_mv 10.4028/www.scientific.net/KEM.734.128
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 0
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description Direct Laser Deposition (DLD) is a modern Additive Layer Manufacturing (ALM) technology that offers the possibility of lean manufacture and the ability to produce near-net shape components with complex geometries. Anisotropic microstructures are typically produced due to thermal cycles that occur during the layer by layer process, resulting in epitaxial grains forming along the build direction. Therefore, build direction, whether horizontal (0°) or vertical (90°), may have a pronounced effect upon mechanical properties. While, it is generally accepted that the mechanical properties of cast materials are well understood, the same cannot be said for materials produced using DLD. Although, mechanical testing of materials usually dictates the use of round bar specimens, due to the cost of manufacture and fundamental nature of this study a miniaturised test technique better lends itself to characterise the cast and DLD built alloys’ properties. The Small Punch (SP) creep test is a widely utilised miniaturised test technique for characterising and ranking the creep response of metallic material properties when large quantities may not be readily available. This paper will apply the SP creep test to characterise the properties of DLD variants of the nickel based superalloy C263 in comparison to the traditional cast material. Tests were performed at elevated temperatures akin to those experienced in service. Interpretation of the microstructures and SP creep results has been carried out; relating build direction, microstructures, minimum displacement rate and time to rupture.
published_date 2017-04-01T13:06:11Z
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score 11.048453

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