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Quantitative polarised light microscopy of metals / HAMED Safaie
Swansea University Author: HAMED Safaie
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Copyright: The author, Hamed Safaie, 2022. Released under the terms of a Creative Commons Attribution-Share Alike (CC-BY-SA) License. Third party content is excluded for use under the license terms.
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DOI (Published version): 10.23889/SUthesis.61970
Abstract
For most engineering metals a material’s crystal structure can play a significant role in its performance in service. This is particularly relevant for materials that display pronounced differences in their physical properties depending on the arrangement and orientation of these crystals. Examples...
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Swansea
2022
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Institution: | Swansea University |
Degree level: | Doctoral |
Degree name: | Ph.D |
Supervisor: | Pleydell-Pearce, Cameron ; Johnston, Richard |
URI: | https://cronfa.swan.ac.uk/Record/cronfa61970 |
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2022-11-21T12:16:27.2179564 v2 61970 2022-11-21 Quantitative polarised light microscopy of metals 8a6186ce81e58f64f1f6877ce8595557 HAMED Safaie HAMED Safaie true false 2022-11-21 FGSEN For most engineering metals a material’s crystal structure can play a significant role in its performance in service. This is particularly relevant for materials that display pronounced differences in their physical properties depending on the arrangement and orientation of these crystals. Examples of such alloys are titanium and aluminium which are employed in a wide range of applications from medical to structural. Conventionally, the crystal structure of these materials is measured using various X-ray and electron diffraction techniques. Unfortunately, these are generally costly, time-consuming and therefore impractical in an industrial quality assurance setting. On-going research at Swansea University has demonstrated that a simpler alternative offers a solution to this problem. The project aimed to build on this research to develop a semi-automated method to conduct this analysis. The work involves extensive characterisation of various materials using optical and electron microscopes; this will focus on the direct correlation of electron diffraction data to polarised light microscopy. The project will concentrate on developing this apparatus to provide high quality, reliable information on material crystal structures. Electron Backscatter Diffraction (EBSD) is the most well-known approach to investigate the crystal orientation of polycrystalline material. However, when compared to optical microscopy EBSD is an expensive approach, very time consuming and complex laboratory technique needed to plot a crystal orientation map. The research offers a novel approach for optically anisotropic (titanium) and isotropic (aluminium) material to plot the crystal orientation map. The aim of the research is to offer a simpler, cheaper, and less time-consuming method which can be affordable by a middle-class company to have access to the crystal orientation map. E-Thesis Swansea 8 11 2022 2022-11-08 10.23889/SUthesis.61970 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University Pleydell-Pearce, Cameron ; Johnston, Richard Doctoral Ph.D 2022-11-21T12:16:27.2179564 2022-11-21T11:46:44.1393824 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised HAMED Safaie 1 61970__25855__65126f1b54854088bc4b4ae6a5bb2b0b.pdf Safaie_Hamed_PhD_Thesis_Final_Redacted_Signature.pdf 2022-11-21T11:56:50.7150150 Output 13759765 application/pdf E-Thesis – open access true Copyright: The author, Hamed Safaie, 2022. Released under the terms of a Creative Commons Attribution-Share Alike (CC-BY-SA) License. Third party content is excluded for use under the license terms. true eng https://creativecommons.org/licenses/by-sa/4.0/ |
title |
Quantitative polarised light microscopy of metals |
spellingShingle |
Quantitative polarised light microscopy of metals HAMED Safaie |
title_short |
Quantitative polarised light microscopy of metals |
title_full |
Quantitative polarised light microscopy of metals |
title_fullStr |
Quantitative polarised light microscopy of metals |
title_full_unstemmed |
Quantitative polarised light microscopy of metals |
title_sort |
Quantitative polarised light microscopy of metals |
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8a6186ce81e58f64f1f6877ce8595557 |
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8a6186ce81e58f64f1f6877ce8595557_***_HAMED Safaie |
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HAMED Safaie |
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HAMED Safaie |
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10.23889/SUthesis.61970 |
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description |
For most engineering metals a material’s crystal structure can play a significant role in its performance in service. This is particularly relevant for materials that display pronounced differences in their physical properties depending on the arrangement and orientation of these crystals. Examples of such alloys are titanium and aluminium which are employed in a wide range of applications from medical to structural. Conventionally, the crystal structure of these materials is measured using various X-ray and electron diffraction techniques. Unfortunately, these are generally costly, time-consuming and therefore impractical in an industrial quality assurance setting. On-going research at Swansea University has demonstrated that a simpler alternative offers a solution to this problem. The project aimed to build on this research to develop a semi-automated method to conduct this analysis. The work involves extensive characterisation of various materials using optical and electron microscopes; this will focus on the direct correlation of electron diffraction data to polarised light microscopy. The project will concentrate on developing this apparatus to provide high quality, reliable information on material crystal structures. Electron Backscatter Diffraction (EBSD) is the most well-known approach to investigate the crystal orientation of polycrystalline material. However, when compared to optical microscopy EBSD is an expensive approach, very time consuming and complex laboratory technique needed to plot a crystal orientation map. The research offers a novel approach for optically anisotropic (titanium) and isotropic (aluminium) material to plot the crystal orientation map. The aim of the research is to offer a simpler, cheaper, and less time-consuming method which can be affordable by a middle-class company to have access to the crystal orientation map. |
published_date |
2022-11-08T04:21:13Z |
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1763754401981267968 |
score |
11.013148 |