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Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting

J. A. Cherry, H. M. Davies, S. Mehmood, N. P. Lavery, S. G. R. Brown, J. Sienz, Steve Brown, Johann Sienz Orcid Logo, Nicholas Lavery Orcid Logo, Helen Davies Orcid Logo

The International Journal of Advanced Manufacturing Technology, Volume: 76, Issue: 5-8, Pages: 869 - 879

Swansea University Authors: Steve Brown, Johann Sienz Orcid Logo, Nicholas Lavery Orcid Logo, Helen Davies Orcid Logo

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DOI (Published version): 10.1007/s00170-014-6297-2

Abstract

Additive manufacturing by selective laser melting (SLM) was used to investigate the effect of laser energy density on 316L stainless steel properties. Point distance and exposure time were varied and their impact on porosity, surface finish, microstructure, density and hardness, was evaluated. The s...

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Published in: The International Journal of Advanced Manufacturing Technology
ISSN: 1433-3015
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa18363
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spelling 2019-09-16T14:46:57.3356912 v2 18363 2014-09-10 Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting 07a865adc76376646bc6c03a69ce35a9 Steve Brown Steve Brown true false 17bf1dd287bff2cb01b53d98ceb28a31 0000-0003-3136-5718 Johann Sienz Johann Sienz true false 9f102ff59824fd4f7ce3d40144304395 0000-0003-0953-5936 Nicholas Lavery Nicholas Lavery true false a5277aa17f0f10a481da9e9751ccaeef 0000-0003-4838-9572 Helen Davies Helen Davies true false 2014-09-10 FGSEN Additive manufacturing by selective laser melting (SLM) was used to investigate the effect of laser energy density on 316L stainless steel properties. Point distance and exposure time were varied and their impact on porosity, surface finish, microstructure, density and hardness, was evaluated. The surface roughness was primarily affected by point distance with increased point distance resulting in increased surface roughness, R a, from 10 to 16 μm. Material hardness reached a maximum of 225 HV at 125 J/mm3 and was related to the material porosity; with increased porosity leading to decreased material hardness. Different types of particle coalescence leading to convex surface features were observed (sometimes referred to as balling); from small ball features at low laser energy density to a mixture of both small and large ball features at high laser energy density. Laser energy density was shown to affect total porosity. The minimum amount of porosity, 0.38 %, was observed at an energy density of 104.52 J/mm3. Journal Article The International Journal of Advanced Manufacturing Technology 76 5-8 869 879 1433-3015 1 2 2015 2015-02-01 10.1007/s00170-014-6297-2 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-09-16T14:46:57.3356912 2014-09-10T08:16:26.2189881 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised J. A. Cherry 1 H. M. Davies 2 S. Mehmood 3 N. P. Lavery 4 S. G. R. Brown 5 J. Sienz 6 Steve Brown 7 Johann Sienz 0000-0003-3136-5718 8 Nicholas Lavery 0000-0003-0953-5936 9 Helen Davies 0000-0003-4838-9572 10 0018363-30032016092829.pdf JournalofAdvancedManufacturingTechnology316LCherryLavery.pdf 2016-03-30T09:28:29.8670000 Output 1431713 application/pdf Accepted Manuscript true 2016-03-30T00:00:00.0000000 true
title Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting
spellingShingle Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting
Steve Brown
Johann Sienz
Nicholas Lavery
Helen Davies
title_short Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting
title_full Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting
title_fullStr Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting
title_full_unstemmed Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting
title_sort Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting
author_id_str_mv 07a865adc76376646bc6c03a69ce35a9
17bf1dd287bff2cb01b53d98ceb28a31
9f102ff59824fd4f7ce3d40144304395
a5277aa17f0f10a481da9e9751ccaeef
author_id_fullname_str_mv 07a865adc76376646bc6c03a69ce35a9_***_Steve Brown
17bf1dd287bff2cb01b53d98ceb28a31_***_Johann Sienz
9f102ff59824fd4f7ce3d40144304395_***_Nicholas Lavery
a5277aa17f0f10a481da9e9751ccaeef_***_Helen Davies
author Steve Brown
Johann Sienz
Nicholas Lavery
Helen Davies
author2 J. A. Cherry
H. M. Davies
S. Mehmood
N. P. Lavery
S. G. R. Brown
J. Sienz
Steve Brown
Johann Sienz
Nicholas Lavery
Helen Davies
format Journal article
container_title The International Journal of Advanced Manufacturing Technology
container_volume 76
container_issue 5-8
container_start_page 869
publishDate 2015
institution Swansea University
issn 1433-3015
doi_str_mv 10.1007/s00170-014-6297-2
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 - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description Additive manufacturing by selective laser melting (SLM) was used to investigate the effect of laser energy density on 316L stainless steel properties. Point distance and exposure time were varied and their impact on porosity, surface finish, microstructure, density and hardness, was evaluated. The surface roughness was primarily affected by point distance with increased point distance resulting in increased surface roughness, R a, from 10 to 16 μm. Material hardness reached a maximum of 225 HV at 125 J/mm3 and was related to the material porosity; with increased porosity leading to decreased material hardness. Different types of particle coalescence leading to convex surface features were observed (sometimes referred to as balling); from small ball features at low laser energy density to a mixture of both small and large ball features at high laser energy density. Laser energy density was shown to affect total porosity. The minimum amount of porosity, 0.38 %, was observed at an energy density of 104.52 J/mm3.
published_date 2015-02-01T03:21:31Z
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score 11.016235

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