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Dispersion of CNTs in selective laser melting printed AlSi10mg composites via friction stir processing

  • Zhenglin Du*
  • , Ming Jen Tan
  • , Jun Feng Guo
  • , Jun Wei
  • , Chee Kai Chua
  • *Corresponding author for this work

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

Abstract

The superior elastic modulus, stiffness and wear resistance of particulate-reinforced metal composites (MMCs) have drawn much attention in various industries ranging from defence, aerospace and automobile industries. Here, friction stir processing (FSP) has successfully dispersed carbon nanotubes (CNTs) and significantly reduced cavities in selective laser melting (SLM) fabricated AlSi10Mg-CNTs composites. Further grain refinement, was achieved via FSP with the addition of CNTs. This is mainly attributed to the dynamic recrystallization and Zener pinning effect. The addition of CNTs to AlSi10Mg resulted in significant improvement in hardness of SLM fabricated aluminium composites. However, FSP of these samples resulted in reductions in the Vicker’s microhardness. This could be due to the dissolution of hardening precipitates and the absences of fine dendritic network present in SLM fabricated parts.

Original languageEnglish
Title of host publicationTHERMEC 2016
EditorsChristof Sommitsch, Mihail Ionescu, Brajendra Mishra, Brajendra Mishra, Ernst Kozeschnik, T. Chandra
PublisherTrans Tech Publications Ltd
Pages1915-1920
Number of pages6
ISBN (Print)9783035711295
DOIs
StatePublished - 2017
Externally publishedYes
Event9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 - Graz, Austria
Duration: 29 May 20163 Jun 2016

Publication series

NameMaterials Science Forum
Volume879
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016
Country/TerritoryAustria
CityGraz
Period29/05/163/06/16

Keywords

  • AlSi10Mg
  • Carbon nanotubes
  • Friction stir processing
  • Nano-composites
  • Selective laser melting

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