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

  • Guan Yingchun (a1) (a2), Zhou Wei (a1) (a2), Zheng Hongyu (a2), Li Zhongli (a2), Seng Hwee Leng (a3) and Hong Minghui (a4)...

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.

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Corresponding author

Address correspondence and reprint requests to: Y.C. Guan, Nanyang Technological University, 50 Nanyang Avenue, Singapore639798. E-mail: guan0013@e.ntu.edu.sg

References

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