Effect of sintering parameters on densification and microstructural evolution of nano-sized titanium nitride reinforced titanium alloys

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

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The effects of spark plasma sintering (SPS) temperature and time on nano-sized TiN particle dispersed in titanium matrix have been investigated. Ti–6Al–4V and nano-TiN powders were mixed in a T2F Turbula mixer in different proportions (1–4 vol%). The admixed powders were consolidated using SPS while the sintered compacts were characterized using field emission scanning electron microscopy (FE-SEM), equipped with energy dispersive X-ray spectroscopy (EDS) and X-ray diffractometry techniques. Microindentation hardness and fracture behaviour of the sintered compacts were investigated. Results show that an increase in sintering temperature significantly influences the relative densities from 97 to 99% and microhardness of the composites from 389 to 602 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 Ti2N 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
Pages (from-to)202-210
Number of pages9
JournalJournal of Alloys and Compounds
Volume736
DOIs
Publication statusPublished - Mar 5 2018
Externally publishedYes

Fingerprint

Titanium nitride
Spark plasma sintering
Microstructural evolution
Densification
Titanium alloys
Powders
Microhardness
Sintering
Composite materials
Titanium
Field emission
X ray diffraction analysis
Energy dispersive spectroscopy
Hardness
Temperature
Scanning electron microscopy
titanium nitride
titanium alloy (TiAl6V4)
X-Ray Emission Spectrometry

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

@article{479926eae8884f0e9c09c84e24e2826e,
title = "Effect of sintering parameters on densification and microstructural evolution of nano-sized titanium nitride reinforced titanium alloys",
abstract = "The effects of spark plasma sintering (SPS) temperature and time on nano-sized TiN particle dispersed in titanium matrix have been investigated. Ti–6Al–4V and nano-TiN powders were mixed in a T2F Turbula mixer in different proportions (1–4 vol{\%}). The admixed powders were consolidated using SPS while the sintered compacts were characterized using field emission scanning electron microscopy (FE-SEM), equipped with energy dispersive X-ray spectroscopy (EDS) and X-ray diffractometry techniques. Microindentation hardness and fracture behaviour of the sintered compacts were investigated. Results show that an increase in sintering temperature significantly influences the relative densities from 97 to 99{\%} and microhardness of the composites from 389 to 602 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 Ti2N 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.",
author = "Falodun, {Oluwasegun Eso} and Obadele, {Babatunde Abiodun} and Oke, {Samuel Ranti} and Maja, {Mosima Edith} and Olubambi, {Peter Apata}",
year = "2018",
month = "3",
day = "5",
doi = "10.1016/j.jallcom.2017.11.140",
language = "English",
volume = "736",
pages = "202--210",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier Ltd",

}

Effect of sintering parameters on densification and microstructural evolution of nano-sized titanium nitride reinforced titanium alloys. / Falodun, Oluwasegun Eso; Obadele, Babatunde Abiodun; Oke, Samuel Ranti; Maja, Mosima Edith; Olubambi, Peter Apata.

In: Journal of Alloys and Compounds, Vol. 736, 05.03.2018, p. 202-210.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of sintering parameters on densification and microstructural evolution of nano-sized titanium nitride reinforced titanium alloys

AU - Falodun, Oluwasegun Eso

AU - Obadele, Babatunde Abiodun

AU - Oke, Samuel Ranti

AU - Maja, Mosima Edith

AU - Olubambi, Peter Apata

PY - 2018/3/5

Y1 - 2018/3/5

N2 - The effects of spark plasma sintering (SPS) temperature and time on nano-sized TiN particle dispersed in titanium matrix have been investigated. Ti–6Al–4V and nano-TiN powders were mixed in a T2F Turbula mixer in different proportions (1–4 vol%). The admixed powders were consolidated using SPS while the sintered compacts were characterized using field emission scanning electron microscopy (FE-SEM), equipped with energy dispersive X-ray spectroscopy (EDS) and X-ray diffractometry techniques. Microindentation hardness and fracture behaviour of the sintered compacts were investigated. Results show that an increase in sintering temperature significantly influences the relative densities from 97 to 99% and microhardness of the composites from 389 to 602 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 Ti2N 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.

AB - The effects of spark plasma sintering (SPS) temperature and time on nano-sized TiN particle dispersed in titanium matrix have been investigated. Ti–6Al–4V and nano-TiN powders were mixed in a T2F Turbula mixer in different proportions (1–4 vol%). The admixed powders were consolidated using SPS while the sintered compacts were characterized using field emission scanning electron microscopy (FE-SEM), equipped with energy dispersive X-ray spectroscopy (EDS) and X-ray diffractometry techniques. Microindentation hardness and fracture behaviour of the sintered compacts were investigated. Results show that an increase in sintering temperature significantly influences the relative densities from 97 to 99% and microhardness of the composites from 389 to 602 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 Ti2N 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.

UR - http://www.scopus.com/inward/record.url?scp=85034025472&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85034025472&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2017.11.140

DO - 10.1016/j.jallcom.2017.11.140

M3 - Article

AN - SCOPUS:85034025472

VL - 736

SP - 202

EP - 210

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -