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Tailoring Surface Roughness of Micro Selective Laser Melted SS316L by In-Situ Laser Remelting

  • Zhiheng Hu
  • , Balasubramanian Nagarajan
  • , Xu Song
  • , Rui Huang
  • , Wei Zhai
  • , Jun Wei*
  • *Corresponding author for this work
  • Agency for Science, Technology and Research, Singapore

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Micro selective laser melting (SLM) has been developed for the fabrication of complex parts with a fine resolution and smooth finish. Although the fine laser spot size, fine powder size and thin layer thickness can result in a relatively smooth surface compared with the conventional SLM, the surface quality still needs to be improved. In this work, in-situ laser remelting was chosen for the improvement of the surface quality. The effects of in-situ laser remelting process parameters on the surface roughness were investigated using various remelting process parameters. The surface roughness of the top and side surfaces of the samples was characterized using an optical surface profiler. Surface morphology of the parts was characterized using scanning electron microscope. It was observed that the surface texture was evidently different after in-situ laser remelting. Overall, the obtained results indicate that tailoring the top surface roughness of the parts fabricated by micro SLM can be achieved through in-situ laser melting.

Original languageEnglish
Title of host publicationAdvanced Surface Enhancement - Proceedings of the 1st International Conference on Advanced Surface Enhancement INCASE 2019—Research Towards Industrialisation
EditorsSho Itoh, Shashwat Shukla
PublisherSpringer Science and Business Media Deutschland GmbH
Pages337-343
Number of pages7
ISBN (Print)9789811500534
DOIs
StatePublished - 2020
Externally publishedYes
Event1st International Conference on Advanced Surface Enhancement, INCASE 2019 - Singapore, Singapore
Duration: 10 Sep 201912 Sep 2019

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference1st International Conference on Advanced Surface Enhancement, INCASE 2019
Country/TerritorySingapore
CitySingapore
Period10/09/1912/09/19

Keywords

  • Micro selective laser melting
  • Remelting
  • Stainless steel
  • Surface roughness

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