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Effects of resistivity and emissivity of laser melted metals on the performance of the Super High Temperature Additive Manufactured Resistojet (STAR)

Effects of resistivity and emissivity of laser melted metals on the performance of the Super High Temperature Additive Manufactured Resistojet (STAR)
Effects of resistivity and emissivity of laser melted metals on the performance of the Super High Temperature Additive Manufactured Resistojet (STAR)
In this study, we the measured the emissivity and resistivity of additively manufactured Inconel 625 and Hastelloy X up to 1200 K . Total hemispherical emissivity and resistivity were measured using the calorimetric technique following ASTM C835 and the four-point probe method, respectively. Roughness measurements were carried out using focal variation microscopy and high-resolution micro-computed tomography. The results showed that both emissivity and resistivity of as-manufactured SLM metals were significantly higher than cast materials over the entire measured temperature range. The emissivity and resistivity data was used to improve the temperature predictions of a multiphysics model simulating the experiment compared with using cast metals, reducing the difference at the highest temperature down to 6.94 K for Hastelloy X and 26.08 K for Inconel 625.
Ogunlesi, Christopher
d7a11918-d503-4df7-9bd3-1fca49f4d01b
Romei, Federico
2c01d8c3-430b-49f8-9c8c-e30d0d135f89
Robinson, Matthew David
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Kim, Minkwan
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Hamilton, Andrew
9088cf01-8d7f-45f0-af56-b4784227447c
Ogunlesi, Christopher
d7a11918-d503-4df7-9bd3-1fca49f4d01b
Romei, Federico
2c01d8c3-430b-49f8-9c8c-e30d0d135f89
Robinson, Matthew David
27da85d7-512a-4ce6-9e55-7e2e576311d7
Kim, Minkwan
18ed9a6f-484f-4a7c-bf24-b630938c1acc
Hamilton, Andrew
9088cf01-8d7f-45f0-af56-b4784227447c

Ogunlesi, Christopher, Romei, Federico, Robinson, Matthew David, Kim, Minkwan and Hamilton, Andrew (2021) Effects of resistivity and emissivity of laser melted metals on the performance of the Super High Temperature Additive Manufactured Resistojet (STAR). In 16th European Conference on Spacecraft Structures, Materials and Environmental Testing (ECSSMET 2021). 10 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

In this study, we the measured the emissivity and resistivity of additively manufactured Inconel 625 and Hastelloy X up to 1200 K . Total hemispherical emissivity and resistivity were measured using the calorimetric technique following ASTM C835 and the four-point probe method, respectively. Roughness measurements were carried out using focal variation microscopy and high-resolution micro-computed tomography. The results showed that both emissivity and resistivity of as-manufactured SLM metals were significantly higher than cast materials over the entire measured temperature range. The emissivity and resistivity data was used to improve the temperature predictions of a multiphysics model simulating the experiment compared with using cast metals, reducing the difference at the highest temperature down to 6.94 K for Hastelloy X and 26.08 K for Inconel 625.

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Emissivity and Resistivity of additively manufactured Inconel 625 and Hastelloy X - Author's Original
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Published date: 23 March 2021
Venue - Dates: 16th European Conference on Spacecraft Structures, Materials and Environmental Testing, , Virtual, 2021-03-23 - 2021-03-25

Identifiers

Local EPrints ID: 448222
URI: http://eprints.soton.ac.uk/id/eprint/448222
PURE UUID: b7102ba6-426f-4dcf-b709-7897e286b5b6
ORCID for Federico Romei: ORCID iD orcid.org/0000-0003-2283-4658
ORCID for Matthew David Robinson: ORCID iD orcid.org/0000-0003-0709-1219
ORCID for Minkwan Kim: ORCID iD orcid.org/0000-0002-6192-312X
ORCID for Andrew Hamilton: ORCID iD orcid.org/0000-0003-4627-849X

Catalogue record

Date deposited: 15 Apr 2021 16:32
Last modified: 12 Jun 2024 01:53

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Contributors

Author: Christopher Ogunlesi
Author: Federico Romei ORCID iD
Author: Matthew David Robinson ORCID iD
Author: Minkwan Kim ORCID iD
Author: Andrew Hamilton ORCID iD

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