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Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis

The thermal diffusivity of powder bed plays a crucial role in laser powder bed fusion (LPBF) additive manufacturing. The mechanical properties of the parts built by LPBF are immensely influenced by the thermal properties of the powder bed. This study aims to measure the thermal diffusivity of metall...

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Detalles Bibliográficos
Autores principales: Habiba, Ummay, Hebert, Rainer J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10573093/
https://www.ncbi.nlm.nih.gov/pubmed/37834631
http://dx.doi.org/10.3390/ma16196494
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author Habiba, Ummay
Hebert, Rainer J.
author_facet Habiba, Ummay
Hebert, Rainer J.
author_sort Habiba, Ummay
collection PubMed
description The thermal diffusivity of powder bed plays a crucial role in laser powder bed fusion (LPBF) additive manufacturing. The mechanical properties of the parts built by LPBF are immensely influenced by the thermal properties of the powder bed. This study aims to measure the thermal diffusivity of metallic powder, nickel-based super alloy Inconel718 (IN718), in LPBF using laser flash three-layered analysis in a DLF1600 instrument, which incorporates a special powder cell to encapsulate the powdered sample. Measurements were performed at different temperatures. The thermal diffusivity of several reference samples was measured for the purpose of validating the test results, and it was compared to published data for identical measures. It was observed that experimental results for powder samples were smaller than the actual thermal diffusivity of the sample. R software analysis was used to analyze test data in order to obtain powder thermal diffusivity values that were close to the actual values.
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spelling pubmed-105730932023-10-14 Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis Habiba, Ummay Hebert, Rainer J. Materials (Basel) Article The thermal diffusivity of powder bed plays a crucial role in laser powder bed fusion (LPBF) additive manufacturing. The mechanical properties of the parts built by LPBF are immensely influenced by the thermal properties of the powder bed. This study aims to measure the thermal diffusivity of metallic powder, nickel-based super alloy Inconel718 (IN718), in LPBF using laser flash three-layered analysis in a DLF1600 instrument, which incorporates a special powder cell to encapsulate the powdered sample. Measurements were performed at different temperatures. The thermal diffusivity of several reference samples was measured for the purpose of validating the test results, and it was compared to published data for identical measures. It was observed that experimental results for powder samples were smaller than the actual thermal diffusivity of the sample. R software analysis was used to analyze test data in order to obtain powder thermal diffusivity values that were close to the actual values. MDPI 2023-09-29 /pmc/articles/PMC10573093/ /pubmed/37834631 http://dx.doi.org/10.3390/ma16196494 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Habiba, Ummay
Hebert, Rainer J.
Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis
title Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis
title_full Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis
title_fullStr Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis
title_full_unstemmed Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis
title_short Powder Bed Thermal Diffusivity Using Laser Flash Three Layer Analysis
title_sort powder bed thermal diffusivity using laser flash three layer analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10573093/
https://www.ncbi.nlm.nih.gov/pubmed/37834631
http://dx.doi.org/10.3390/ma16196494
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