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Conference Paper/Proceeding/Abstract 1239 views

Small Punch Testing of Powder Bed Direct Laser Deposits

Sean Davies, Robert Lancaster Orcid Logo, Spencer Jeffs, Gavin Baxter

Key Engineering Materials, Volume: 734, Pages: 94 - 103

Swansea University Author: Robert Lancaster Orcid Logo

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DOI (Published version): 10.4028/www.scientific.net/KEM.734.94

Abstract

Additive Layer Manufacturing (ALM) technologies, such as Powder Bed Direct Laser Deposition (PB-DLD), have gained increasing popularity within the aerospace industry due to the advantages they hold over conventional processing routes. Among the advantages are the ability to produce more sophisticate...

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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/cronfa31865
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first_indexed 2017-02-06T14:42:15Z
last_indexed 2018-02-09T05:19:11Z
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spelling 2017-03-02T11:41:01.4195926 v2 31865 2017-02-06 Small Punch Testing of Powder Bed Direct Laser Deposits e1a1b126acd3e4ff734691ec34967f29 0000-0002-1365-6944 Robert Lancaster Robert Lancaster true false 2017-02-06 MTLS Additive Layer Manufacturing (ALM) technologies, such as Powder Bed Direct Laser Deposition (PB-DLD), have gained increasing popularity within the aerospace industry due to the advantages they hold over conventional processing routes. Among the advantages are the ability to produce more sophisticated cross-sectional geometries, a decrease in production lead times and an improvement to the buy-to-fly ratio. However, build quality and microstructural characteristics have a dependency on the process variables such as build direction. In order to understand the influence of grain size and build orientation on tensile behaviour, the Small Punch Tensile (SPT) testing technique has been applied to variants of the nickel based superalloy C263, manufactured using the PB-DLD method. The test technique utilises miniaturised samples, requiring only small volumes of material and is therefore a desirable test method to employ. SPT testing has characterised the mechanical properties between vertically and horizontally built PB-DLD C263 in comparison with the cast material derivative. Differences in mechanical performance between each variant have been revealed and found to be associated with microstructural variations. The deformation behaviour across each material variant have been exposed by interrupted tests. SPT results have also been accompanied by fractography, fracture energy calculations along with comparisons with uniaxial data. Conference Paper/Proceeding/Abstract Key Engineering Materials 734 94 103 1013-9826 C263, Powder Bed Direct Laser Deposition, Small Punch, Tensile 1 4 2017 2017-04-01 10.4028/www.scientific.net/KEM.734.94 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2017-03-02T11:41:01.4195926 2017-02-06T09:20:59.2817416 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Sean Davies 1 Robert Lancaster 0000-0002-1365-6944 2 Spencer Jeffs 3 Gavin Baxter 4
title Small Punch Testing of Powder Bed Direct Laser Deposits
spellingShingle Small Punch Testing of Powder Bed Direct Laser Deposits
Robert Lancaster
title_short Small Punch Testing of Powder Bed Direct Laser Deposits
title_full Small Punch Testing of Powder Bed Direct Laser Deposits
title_fullStr Small Punch Testing of Powder Bed Direct Laser Deposits
title_full_unstemmed Small Punch Testing of Powder Bed Direct Laser Deposits
title_sort Small Punch Testing of Powder Bed Direct Laser Deposits
author_id_str_mv e1a1b126acd3e4ff734691ec34967f29
author_id_fullname_str_mv e1a1b126acd3e4ff734691ec34967f29_***_Robert Lancaster
author Robert Lancaster
author2 Sean Davies
Robert Lancaster
Spencer Jeffs
Gavin Baxter
format Conference Paper/Proceeding/Abstract
container_title Key Engineering Materials
container_volume 734
container_start_page 94
publishDate 2017
institution Swansea University
issn 1013-9826
doi_str_mv 10.4028/www.scientific.net/KEM.734.94
college_str Faculty of Science and Engineering
hierarchytype
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
active_str 0
description Additive Layer Manufacturing (ALM) technologies, such as Powder Bed Direct Laser Deposition (PB-DLD), have gained increasing popularity within the aerospace industry due to the advantages they hold over conventional processing routes. Among the advantages are the ability to produce more sophisticated cross-sectional geometries, a decrease in production lead times and an improvement to the buy-to-fly ratio. However, build quality and microstructural characteristics have a dependency on the process variables such as build direction. In order to understand the influence of grain size and build orientation on tensile behaviour, the Small Punch Tensile (SPT) testing technique has been applied to variants of the nickel based superalloy C263, manufactured using the PB-DLD method. The test technique utilises miniaturised samples, requiring only small volumes of material and is therefore a desirable test method to employ. SPT testing has characterised the mechanical properties between vertically and horizontally built PB-DLD C263 in comparison with the cast material derivative. Differences in mechanical performance between each variant have been revealed and found to be associated with microstructural variations. The deformation behaviour across each material variant have been exposed by interrupted tests. SPT results have also been accompanied by fractography, fracture energy calculations along with comparisons with uniaxial data.
published_date 2017-04-01T03:38:58Z
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score 11.013037

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