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Characterisation of additively manufactured metallic stents

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conference contribution
posted on 27.01.2021, 09:11 by Enzoh Langi, Anuj Bisht, Vadim Silberschmidt, Pablo Ruiz, Felix Vogt, Lucas Mailto, Lukas Masseling, Liguo Zhao
This paper focuses on microstructural characterisation of metallic stents produced with additive manufacturing, a promising technique to deliver patient-specific stents. A 316L stainless steel tube, manufactured by selective laser melting (SLM), and a 316L stainless steel stent were investigated. Specimens were prepared for microstructural studies through sectioning, mounting, grinding and metallurgical polishing procedures. Microstructures were examined employing a JEOL 7100F scanning electron microscope, with simultaneous elemental analysis using energy dispersive x-ray spectroscopy (EDS) and orientation analysis with electron backscatter diffraction. The obtained results showed that a center of the selective laser melted (SLMed) tube had a columnar and coarse grain microstructure, with high-angle grain boundaries. The EDS analysis confirmed that the composition of the SLMed tube were similar to those of commercial stent, but with some differences in weight fractions of alloy elements.

Funding

Smart Peripheral Stents for the Lower Extremity - Design, Manufacturing and Evaluation

Engineering and Physical Sciences Research Council

Find out more...

Royal Society of the UK (IE160066)

British Heart Foundation (FS/15/21/31424)

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Procedia Structural Integrity

Volume

15

Pages

41 - 45

Source

International Conference on Stents: Materials, Mechanics and Manufacturing 2019 (ICS3M 2019)

Publisher

Elsevier BV

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (CC BY-NC-ND 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2019-07-29

Copyright date

2019

ISSN

2452-3216

eISSN

2452-3216

Language

en

Editor(s)

Liguo Zhao; Vadim V. Silberschmidt

Location

London, UK

Event dates

15th July 2019 - 17th July 2019

Depositor

Mr Enzoh Langi. Deposit date: 25 January 2021

Exports

Loughborough Publications

Categories

Exports