Understanding the spark plasma sintering behaviour of Ti-6Al-4V reinforced with nanosized TiN

Oluwasegun Eso Falodun, Mosima Edith Maja, Babatunde Abiodun Obadele, Samuel Ranti Oke, Oladeji Oluremi Ige, Peter Apata Olubambi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The titanium alloy reinforced titanium nitride nanocomposites were prepared through powder metallurgy via spark plasma sintering. Ti-6Al-4V with nano-sized TiN composites was sintered and characterized using field emission scanning electron microscopy (FE-SEM), equipped with energy dispersive X-ray spectroscopy (EDS), X-ray diffractometry techniques and Vickers microhardness tester (Future-Tech FM 800). The effects of the titanium nitride content on the microstructure, microhardness and fracture behaviour of the composites were investigated. Results show that an increase in sintering temperature significantly influences the relative densities from 97.53 to 99.89% and microhardness of the composites from 389 to 493 HV0.1. The microstructural studies as well revealed transformation from lamellar α/β phases in Ti-6Al-4V to duplex (bimodal) structures as a result of TiN addition. Sintered composite held for 30 min has the highest microhardness values influenced primarily by the presence of the Ti 2 N phase, while fracture morphology of the sintered alloys shows a transgranular pattern with fine dimples features which present a good cohesion and strength of the grain.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2017, MS and T 2017
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages1346-1348
Number of pages3
ISBN (Electronic)9781510850583
DOIs
Publication statusPublished - Jan 1 2017
Externally publishedYes
EventMaterials Science and Technology Conference and Exhibition 2017, MS and T 2017 - Pittsburgh, United States
Duration: Oct 8 2017Oct 12 2017

Publication series

NameMaterials Science and Technology Conference and Exhibition 2017, MS and T 2017
Volume2

Conference

ConferenceMaterials Science and Technology Conference and Exhibition 2017, MS and T 2017
CountryUnited States
CityPittsburgh
Period10/8/1710/12/17

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Materials Science (miscellaneous)
  • Energy Engineering and Power Technology

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