Selective laser fusion of titanium based gradient alloy reinforced by nano sized TiC ceramic

I. Shishkovsky, V. Scherbakov

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

2 Citations (Scopus)

Abstract

The surface improvement of light-weighted metals by adding of hard ceramic particles into a metal matrix has promised to be perspectives for aerospace industry. In the present study, titanium carbides of nano size were incorporated to the titanium substrate by a selective laser melting (SLM) of Ti + (10, 15 and 20 wt.%) TiC powder mixtures via an Ytterbium fiber laser with 1.075 μm wavelength. Optimal regimes of the 3D laser additive process were determined. We studied how the interfacial properties would change due to the difference in composition in case of the titanium matrix nano composites (TMNC) reinforced with carbides. The phase analysis of the fabricated TMNC showed that the initial carbide particles are dissolved after the remelting with different velocities. A particular attention was paid to the carbide dilution and secondary carbides formation mechanisms when the TiC was mixed with titanium. Various parameters, such as microstructure, phase constitution and mechanical properties of the gradient TMNCs were investigated by means of OM, SEM, XRD and microhardness measurement. It was shown that the microstructure had two types of heterogeneity: the TiC particles at the interlayer interfaces and element chemical segregation on the boundaries of the tracks.

Original languageEnglish
Title of host publicationNano Engineering and Materials Technologies II - 6th ICNNN 2017 and ICMTA 2017
EditorsKazuo Umemura
PublisherTrans Tech Publications Ltd
Pages85-90
Number of pages6
ISBN (Print)9783035712018
DOIs
Publication statusPublished - 2018
Externally publishedYes
Event6th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2017 and 2nd International Conference on Materials Technology and Applications, ICMTA 2017 - Tokyo, Japan
Duration: 26 Oct 201729 Oct 2017

Publication series

NameMaterials Science Forum
Volume916 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference6th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2017 and 2nd International Conference on Materials Technology and Applications, ICMTA 2017
Country/TerritoryJapan
CityTokyo
Period26/10/1729/10/17

Keywords

  • Functional gradient (FG)
  • Selective laser melting (SLM)
  • Titanium carbide
  • Titanium matrix nano composites (TMNC)

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