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Analysis of selective vaporization behavior in laser melting of magnesium alloy by plume deposition

Published online by Cambridge University Press:  04 November 2013

Guan Yingchun ,
Zhou Wei ,
Zheng Hongyu ,
Li Zhongli ,
Seng Hwee Leng  and
Hong Minghui
Guan Yingchun*
Affiliation:
Nanyang Technological University, Singapore Singapore Institute of Manufacturing Technology, Singapore
Zhou Wei
Affiliation:
Nanyang Technological University, Singapore Singapore Institute of Manufacturing Technology, Singapore
Zheng Hongyu
Affiliation:
Singapore Institute of Manufacturing Technology, Singapore
Li Zhongli
Affiliation:
Singapore Institute of Manufacturing Technology, Singapore
Seng Hwee Leng
Affiliation:
Institute of Materials Research & Engineering, Singapore
Hong Minghui
Affiliation:
National University of Singapore, Singapore
*
Address correspondence and reprint requests to: Y.C. Guan, Nanyang Technological University, 50 Nanyang Avenue, Singapore639798. E-mail: guan0013@e.ntu.edu.sg
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Abstract

Laser surface melting is one of the most important processes in laser material processing. Selective vaporization of alloying elements in laser melting offers fundamental understanding of laser processing on metallic alloys. This work provides linkage between laser melting and material properties using secondary ion mass spectrometry (SIMS) for tiny vaporized species in laser-generated plume and energy dispersive spectroscopy (EDS) for solid solution range in molten pool, both qualitatively and quantitatively (up to hundreds of micron). Silicon wafer was used to collect the generated plume. Chemical analysis was carried out on top surface and sub-surface of the deposited plume. Transport behavior as well as distribution of the vaporized species inside the plume was further proposed.

Keywords

laser processingselective vaporizationsecondary ion mass spectrometrymagnesium alloysurface modification
Type
Research Article
Information
Laser and Particle Beams , Volume 32 , Issue 1 , March 2014 , pp. 49 - 54
Copyright
Copyright © Cambridge University Press 2013 

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