Skip to main navigation Skip to search Skip to main content

Effect of In-Situ Laser Remelting on the Microstructure of SS316L Fabricated by Micro Selective Laser Melting

  • Balasubramanian Nagarajan
  • , Zhiheng Hu
  • , Shubo Gao
  • , Xu Song
  • , Rui Huang
  • , Matteo Seita
  • , Jun Wei*
  • *Corresponding author for this work
  • Agency for Science, Technology and Research, Singapore
  • Nanyang Technological University

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

Abstract

Due to the increasing attention on additive manufacturing of micro components, an in-house micro-selective laser melting (SLM) system using a fine laser spot size and a small layer thickness with an ability to handle fine powders has been developed recently. In this research work, in-situ laser remelting effects on the part density and microstructure of the SS316L parts fabricated using micro SLM have been studied. After every layer of micro SLM, laser remelting was performed using the same laser source. Remelting effects have been investigated at different process conditions with varying laser power and scanning speeds. The effects of remelting on the part porosity and microstructure of the micro SLM parts have been studied. Experimental results revealed that in-situ laser remelting significantly influences the part density and microstructure of the 316L micro SLM parts. The study highlights that in addition to the purpose of improving the surface finish, laser remelting can be used to tailor the microstructure and hence mechanical properties of the micro SLM parts.

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
Pages330-336
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

  • AM post processing
  • Laser remelting
  • Micro selective laser melting
  • Microstructure

Fingerprint

Dive into the research topics of 'Effect of In-Situ Laser Remelting on the Microstructure of SS316L Fabricated by Micro Selective Laser Melting'. Together they form a unique fingerprint.

Cite this