Rapid TMC laser prototyping: Compositional and phase-structural sustainability via combinatorial design of titanium-based gradient alloy reinforced by nano-sized TiC or TiB2 ceramics

Igor Shishkovsky, Nina Kakovkina, Vladimir Scherbakov

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

1 Citation (Scopus)

Abstract

In this study, we developed an innovative approach to achieving a higher sustainability in the experimentally guided combinatorial design of metal-matrix gradient structural composites. The titanium carbide of nano sizes or titanium diboride of submicron sizes were incorporated into the titanium matrix during the selective laser melting (SLM) process of Ti+(10, 15, 20 wt.%) TiC/TiB2 powder mixtures. Optimal regimes of 3D laser powder bed process were determined. We compared how the interfacial properties would change due to the composition differences in case of TiC and TiB2 reinforcing titanium matrix composites (TMC). Phase analysis of the fabricated TMC showed that the initial TiC and TiB2 particles dissolved with different velocities after remelting. Special attention was paid to carbon and boron dilution and secondary carbides and borides phase formation mechanisms when TiC/TiB2 were mixed with titanium. Microstructure, phase constitution and mechanical properties of the TMCs were investigated by the OM, SEM, XRD and microhardness measurement in order to validate the rapid alloy prototyping (RAP) concept in single technological approach.

Original languageEnglish
Title of host publicationLaser 3D Manufacturing V
EditorsHenry Helvajian, Alberto Pique, Bo Gu
PublisherSPIE
ISBN (Electronic)9781510615311
DOIs
Publication statusPublished - 2018
Externally publishedYes
Event5th Meeting of Laser 3D Manufacturing - San Francisco, United States
Duration: 29 Jan 20181 Feb 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10523
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference5th Meeting of Laser 3D Manufacturing
Country/TerritoryUnited States
CitySan Francisco
Period29/01/181/02/18

Keywords

  • combinatorial design
  • functional gradient
  • nano-reinforced additives
  • rapid alloy prototyping (RAP) method
  • selective laser melting (SLM)
  • titanium matrix composites (TMC)

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