EBSD characterization of selected laser melted 316L stainless steel

Additive Manufacturing (AM) involves depositing material layer by layer to create products as opposed to traditional manufacturing processes which uses subtraction method such as machining and milling to remove material to get the desired product shape. Advancements in AM have allowed the production...

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Main Author: Muhammad Shafiq Omar
Other Authors: Zhou Wei
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2022
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Online Access:https://hdl.handle.net/10356/158928
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1589282023-03-04T20:14:37Z EBSD characterization of selected laser melted 316L stainless steel Muhammad Shafiq Omar Zhou Wei School of Mechanical and Aerospace Engineering MWZHOU@ntu.edu.sg Engineering::Mechanical engineering Additive Manufacturing (AM) involves depositing material layer by layer to create products as opposed to traditional manufacturing processes which uses subtraction method such as machining and milling to remove material to get the desired product shape. Advancements in AM have allowed the production of more complex parts and components in relatively short time. Selective Laser Melting (SLM) is a variation of AM that is widely used and will be discussed in this paper. Electron Back-Scatter Diffraction (EBSD) is an important technique which utilises the captured diffraction patterns of electrons from crystals to obtain the grain crystallographic orientations and morphology. These data captured allows the characterisation of materials through analysing the microstructures and correlate the data to the corresponding material properties. Sample preparation methods were also described to ensure that diffraction patterns were able to be captured. Through this technique, a comparison between wrought and SLM-ed 316L stainless steel was made through analyses of the microstructures obtained from OM, SEM and EBSD. It is found that SLM results in longer, epitaxial grains to be observed and leads to finer grain sizes which in turn leads to more improved mechanical properties such as strength. Also, Vickers microhardness tests are conducted and SLM of the sample leads to increased average microhardness value of 219.04 HV while wrought 316L has an average value of 198.76 HV. Bachelor of Engineering (Mechanical Engineering) 2022-06-08T04:29:08Z 2022-06-08T04:29:08Z 2022 Final Year Project (FYP) Muhammad Shafiq Omar (2022). EBSD characterization of selected laser melted 316L stainless steel. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/158928 https://hdl.handle.net/10356/158928 en B284 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
spellingShingle Engineering::Mechanical engineering
Muhammad Shafiq Omar
EBSD characterization of selected laser melted 316L stainless steel
description Additive Manufacturing (AM) involves depositing material layer by layer to create products as opposed to traditional manufacturing processes which uses subtraction method such as machining and milling to remove material to get the desired product shape. Advancements in AM have allowed the production of more complex parts and components in relatively short time. Selective Laser Melting (SLM) is a variation of AM that is widely used and will be discussed in this paper. Electron Back-Scatter Diffraction (EBSD) is an important technique which utilises the captured diffraction patterns of electrons from crystals to obtain the grain crystallographic orientations and morphology. These data captured allows the characterisation of materials through analysing the microstructures and correlate the data to the corresponding material properties. Sample preparation methods were also described to ensure that diffraction patterns were able to be captured. Through this technique, a comparison between wrought and SLM-ed 316L stainless steel was made through analyses of the microstructures obtained from OM, SEM and EBSD. It is found that SLM results in longer, epitaxial grains to be observed and leads to finer grain sizes which in turn leads to more improved mechanical properties such as strength. Also, Vickers microhardness tests are conducted and SLM of the sample leads to increased average microhardness value of 219.04 HV while wrought 316L has an average value of 198.76 HV.
author2 Zhou Wei
author_facet Zhou Wei
Muhammad Shafiq Omar
format Final Year Project
author Muhammad Shafiq Omar
author_sort Muhammad Shafiq Omar
title EBSD characterization of selected laser melted 316L stainless steel
title_short EBSD characterization of selected laser melted 316L stainless steel
title_full EBSD characterization of selected laser melted 316L stainless steel
title_fullStr EBSD characterization of selected laser melted 316L stainless steel
title_full_unstemmed EBSD characterization of selected laser melted 316L stainless steel
title_sort ebsd characterization of selected laser melted 316l stainless steel
publisher Nanyang Technological University
publishDate 2022
url https://hdl.handle.net/10356/158928
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