TY - GEN
T1 - Understanding the spark plasma sintering behaviour of Ti-6Al-4V reinforced with nanosized TiN
AU - Falodun, Oluwasegun Eso
AU - Maja, Mosima Edith
AU - Obadele, Babatunde Abiodun
AU - Oke, Samuel Ranti
AU - Ige, Oladeji Oluremi
AU - Olubambi, Peter Apata
N1 - Publisher Copyright:
© Copyright 2017 MS&T17®.
PY - 2017
Y1 - 2017
N2 - 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 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 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 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.
KW - Densification
KW - Microhardness
KW - Nanosized tin
KW - Spark plasma sintering
KW - Titanium
UR - http://www.scopus.com/inward/record.url?scp=85047635891&partnerID=8YFLogxK
U2 - 10.7449/2017/MST-2017-1346-1348
DO - 10.7449/2017/MST-2017-1346-1348
M3 - Conference contribution
AN - SCOPUS:85047635891
T3 - Materials Science and Technology Conference and Exhibition 2017, MS and T 2017
SP - 1346
EP - 1348
BT - Materials Science and Technology Conference and Exhibition 2017, MS and T 2017
PB - Association for Iron and Steel Technology, AISTECH
T2 - Materials Science and Technology Conference and Exhibition 2017, MS and T 2017
Y2 - 8 October 2017 through 12 October 2017
ER -