Laser surface processing of ultralight magnesium alloys

Magnesium alloys have been increasingly used in the industries and biomaterial fields due to their low density, high specific strength and biodegradability. However, poor surface-related properties are major factors that limit their practical applications. Laser surface processing has been considere...

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Main Author: Guan, Yingchun
Other Authors: Zheng Hongyu
Format: Theses and Dissertations
Language:English
Published: 2012
Subjects:
Online Access:https://hdl.handle.net/10356/48900
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-489002023-03-11T17:57:21Z Laser surface processing of ultralight magnesium alloys Guan, Yingchun Zheng Hongyu Zhou Wei School of Mechanical and Aerospace Engineering DRNTU::Engineering::Materials::Metallic materials::Alloys DRNTU::Engineering::Materials::Metallic materials::Corrosion Magnesium alloys have been increasingly used in the industries and biomaterial fields due to their low density, high specific strength and biodegradability. However, poor surface-related properties are major factors that limit their practical applications. Laser surface processing has been considered as an advanced technique to improve surface properties of materials. The present work investigates fundamental mechanisms of kinetics of phase transformation under non-equilibrium conditions, microstructural evolution and surface performance of laser-treated surfaces as well as laser-Mg interaction. This thesis demonstrates the capability of millisecond pulse laser in achieving the enhanced corrosion resistance and surface wettability of Mg alloy. It also analyzes heat flow and rapid solidification in the molten pool as well as material loss during laser irradiation. Furthermore, it explores theoretical study of nanosecond and femtosecond pulse laser processing on Mg alloy, and shows interesting results with potential applications. DOCTOR OF PHILOSOPHY (MAE) 2012-05-10T08:29:45Z 2012-05-10T08:29:45Z 2012 2012 Thesis Guan, Y. C. (2012). Laser surface processing of ultralight magnesium alloys. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/48900 10.32657/10356/48900 en 231 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials::Metallic materials::Alloys
DRNTU::Engineering::Materials::Metallic materials::Corrosion
spellingShingle DRNTU::Engineering::Materials::Metallic materials::Alloys
DRNTU::Engineering::Materials::Metallic materials::Corrosion
Guan, Yingchun
Laser surface processing of ultralight magnesium alloys
description Magnesium alloys have been increasingly used in the industries and biomaterial fields due to their low density, high specific strength and biodegradability. However, poor surface-related properties are major factors that limit their practical applications. Laser surface processing has been considered as an advanced technique to improve surface properties of materials. The present work investigates fundamental mechanisms of kinetics of phase transformation under non-equilibrium conditions, microstructural evolution and surface performance of laser-treated surfaces as well as laser-Mg interaction. This thesis demonstrates the capability of millisecond pulse laser in achieving the enhanced corrosion resistance and surface wettability of Mg alloy. It also analyzes heat flow and rapid solidification in the molten pool as well as material loss during laser irradiation. Furthermore, it explores theoretical study of nanosecond and femtosecond pulse laser processing on Mg alloy, and shows interesting results with potential applications.
author2 Zheng Hongyu
author_facet Zheng Hongyu
Guan, Yingchun
format Theses and Dissertations
author Guan, Yingchun
author_sort Guan, Yingchun
title Laser surface processing of ultralight magnesium alloys
title_short Laser surface processing of ultralight magnesium alloys
title_full Laser surface processing of ultralight magnesium alloys
title_fullStr Laser surface processing of ultralight magnesium alloys
title_full_unstemmed Laser surface processing of ultralight magnesium alloys
title_sort laser surface processing of ultralight magnesium alloys
publishDate 2012
url https://hdl.handle.net/10356/48900
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