Investigation on porosity and microhardness of 316L stainless steel fabricated by selective laser melting
Investigation on porosity and microhardness of 316L stainless steel fabricated by selective laser melting
This study investigates the porosity and microhardness of 316L stainless steel samples fabricated by selective laser melting (SLM). The porosity content was measured using the Archimedes method and the advanced X-ray computed tomography (XCT) scan. High densification level (≥99%) with a low average porosity content (~0.82%) were obtained from the Archimedes method. The highest porosity content in the XCT-scanned sample was ~0.61. However, the pores in the SLM samples for both cases (optical microscopy and XCT) were not uniformly distributed. The higher average microhardness values in the SLM samples compared to the wrought manufactured counterpart are attributed to the fine microstructures from the localised melting and rapid solidification rate of the SLM process.
Mohd Yusuf, Shahir
5888c057-33da-45f3-a84d-95a291db8f34
Chen, Yifei
3ae12d9e-c26b-4774-824b-43f4e03ca0a2
Boardman, Richard
5818d677-5732-4e8a-a342-7164dbb10df1
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
20 February 2017
Mohd Yusuf, Shahir
5888c057-33da-45f3-a84d-95a291db8f34
Chen, Yifei
3ae12d9e-c26b-4774-824b-43f4e03ca0a2
Boardman, Richard
5818d677-5732-4e8a-a342-7164dbb10df1
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Mohd Yusuf, Shahir, Chen, Yifei, Boardman, Richard, Yang, Shoufeng and Gao, Nong
(2017)
Investigation on porosity and microhardness of 316L stainless steel fabricated by selective laser melting.
Metals, 7 (2), [64].
(doi:10.3390/met7020064).
Abstract
This study investigates the porosity and microhardness of 316L stainless steel samples fabricated by selective laser melting (SLM). The porosity content was measured using the Archimedes method and the advanced X-ray computed tomography (XCT) scan. High densification level (≥99%) with a low average porosity content (~0.82%) were obtained from the Archimedes method. The highest porosity content in the XCT-scanned sample was ~0.61. However, the pores in the SLM samples for both cases (optical microscopy and XCT) were not uniformly distributed. The higher average microhardness values in the SLM samples compared to the wrought manufactured counterpart are attributed to the fine microstructures from the localised melting and rapid solidification rate of the SLM process.
Text
Investigation on Porosity and Microhardness of 316L Stainless Steel Fabricated by Selective Laser Melting
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Accepted/In Press date: 15 February 2017
e-pub ahead of print date: 20 February 2017
Published date: 20 February 2017
Organisations:
Engineering Mats & Surface Engineerg Gp, Education Hub
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Local EPrints ID: 406407
URI: http://eprints.soton.ac.uk/id/eprint/406407
ISSN: 2075-4701
PURE UUID: e5b24754-da60-480b-a999-00010d6f3b56
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Date deposited: 10 Mar 2017 10:46
Last modified: 16 Mar 2024 03:36
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Yifei Chen
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