Synthesis and characterization of TiN nanoceramic reinforced Ti–7Al–1Mo composite produced by spark plasma sintering

Samson Olaitan Jeje; Mxolisi Brendon Shongwe; Nthabiseng Maledi; Azeez Lawan Rominiyi; Olanrewaju S. Adesina; Peter Apata Olubambi

doi:10.1016/j.msea.2021.140904

Synthesis and characterization of TiN nanoceramic reinforced Ti–7Al–1Mo composite produced by spark plasma sintering

Samson Olaitan Jeje, Mxolisi Brendon Shongwe, Nthabiseng Maledi, Azeez Lawan Rominiyi, Olanrewaju S. Adesina, Peter Apata Olubambi

Metallurgy

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Materials made from alloys of titanium are of utmost importance for various engineering applications owing to their low density and remarkable mechanical properties. Nevertheless, there is a need to enhance their mechanical properties to improve their capacity for load-bearing applications. In this work, spark plasma sintering technique was employed to fabricate TiN nanoceramic reinforced Ti–7Al–1Mo composite. The influence of nano-TiN reinforcement additions on the densification, microstructural evolution, and mechanical properties of Ti–7Al–1Mo ternary alloy was investigated. Scanning electron microscope equipped with energy dispersive x-ray spectrometer was used to investigate the microstructural evolution. The phases present in the sintered composite were investigated using X-ray diffractometer. Unreinforced Ti–7Al–1Mo alloy showed a microstructure with distinct grain boundaries made up of Widmanstatten lath-like morphology with mainly alpha (α) phase and a small percentage of beta (β) phase. Nano-TiN reinforced Ti–7Al–1Mo composites’ morphology revealed a bimodal structure. Ti–7Al–1Mo/7TiN composite was found to possess the highest hardness value of 549 ± 22 HV_1.0 and the highest compressive yield strength of 1295 ± 7 MPa, which depicts an increment of 74 HV and 323 MPa respectively when compared to unreinforced Ti–7Al–1Mo ternary alloy. The developed composites showed strong potentials for load-bearing applications.

Original language	English
Article number	140904
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	807
DOIs	https://doi.org/10.1016/j.msea.2021.140904
Publication status	Published - 11 Mar 2021

Keywords

Compression
Densification
Microhardness
Spark plasma sintering
Titanium matrix composite

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2021.140904

Cite this

Jeje, S. O., Shongwe, M. B., Maledi, N., Rominiyi, A. L., Adesina, O. S., & Olubambi, P. A. (2021). Synthesis and characterization of TiN nanoceramic reinforced Ti–7Al–1Mo composite produced by spark plasma sintering. Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 807, Article 140904. https://doi.org/10.1016/j.msea.2021.140904

@article{c42a478dcd61467f9703d41c25d68305,

title = "Synthesis and characterization of TiN nanoceramic reinforced Ti–7Al–1Mo composite produced by spark plasma sintering",

abstract = "Materials made from alloys of titanium are of utmost importance for various engineering applications owing to their low density and remarkable mechanical properties. Nevertheless, there is a need to enhance their mechanical properties to improve their capacity for load-bearing applications. In this work, spark plasma sintering technique was employed to fabricate TiN nanoceramic reinforced Ti–7Al–1Mo composite. The influence of nano-TiN reinforcement additions on the densification, microstructural evolution, and mechanical properties of Ti–7Al–1Mo ternary alloy was investigated. Scanning electron microscope equipped with energy dispersive x-ray spectrometer was used to investigate the microstructural evolution. The phases present in the sintered composite were investigated using X-ray diffractometer. Unreinforced Ti–7Al–1Mo alloy showed a microstructure with distinct grain boundaries made up of Widmanstatten lath-like morphology with mainly alpha (α) phase and a small percentage of beta (β) phase. Nano-TiN reinforced Ti–7Al–1Mo composites{\textquoteright} morphology revealed a bimodal structure. Ti–7Al–1Mo/7TiN composite was found to possess the highest hardness value of 549 ± 22 HV1.0 and the highest compressive yield strength of 1295 ± 7 MPa, which depicts an increment of 74 HV and 323 MPa respectively when compared to unreinforced Ti–7Al–1Mo ternary alloy. The developed composites showed strong potentials for load-bearing applications.",

keywords = "Compression, Densification, Microhardness, Spark plasma sintering, Titanium matrix composite",

author = "Jeje, \{Samson Olaitan\} and Shongwe, \{Mxolisi Brendon\} and Nthabiseng Maledi and Rominiyi, \{Azeez Lawan\} and Adesina, \{Olanrewaju S.\} and Olubambi, \{Peter Apata\}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = mar,

day = "11",

doi = "10.1016/j.msea.2021.140904",

language = "English",

volume = "807",

journal = "Materials Science \& Engineering A: Structural Materials: Properties, Microstructure and Processing",

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Synthesis and characterization of TiN nanoceramic reinforced Ti–7Al–1Mo composite produced by spark plasma sintering. / Jeje, Samson Olaitan; Shongwe, Mxolisi Brendon; Maledi, Nthabiseng et al.
In: Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, Vol. 807, 140904, 11.03.2021.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Synthesis and characterization of TiN nanoceramic reinforced Ti–7Al–1Mo composite produced by spark plasma sintering

AU - Jeje, Samson Olaitan

AU - Shongwe, Mxolisi Brendon

AU - Maledi, Nthabiseng

AU - Rominiyi, Azeez Lawan

AU - Adesina, Olanrewaju S.

AU - Olubambi, Peter Apata

PY - 2021/3/11

Y1 - 2021/3/11

N2 - Materials made from alloys of titanium are of utmost importance for various engineering applications owing to their low density and remarkable mechanical properties. Nevertheless, there is a need to enhance their mechanical properties to improve their capacity for load-bearing applications. In this work, spark plasma sintering technique was employed to fabricate TiN nanoceramic reinforced Ti–7Al–1Mo composite. The influence of nano-TiN reinforcement additions on the densification, microstructural evolution, and mechanical properties of Ti–7Al–1Mo ternary alloy was investigated. Scanning electron microscope equipped with energy dispersive x-ray spectrometer was used to investigate the microstructural evolution. The phases present in the sintered composite were investigated using X-ray diffractometer. Unreinforced Ti–7Al–1Mo alloy showed a microstructure with distinct grain boundaries made up of Widmanstatten lath-like morphology with mainly alpha (α) phase and a small percentage of beta (β) phase. Nano-TiN reinforced Ti–7Al–1Mo composites’ morphology revealed a bimodal structure. Ti–7Al–1Mo/7TiN composite was found to possess the highest hardness value of 549 ± 22 HV1.0 and the highest compressive yield strength of 1295 ± 7 MPa, which depicts an increment of 74 HV and 323 MPa respectively when compared to unreinforced Ti–7Al–1Mo ternary alloy. The developed composites showed strong potentials for load-bearing applications.

AB - Materials made from alloys of titanium are of utmost importance for various engineering applications owing to their low density and remarkable mechanical properties. Nevertheless, there is a need to enhance their mechanical properties to improve their capacity for load-bearing applications. In this work, spark plasma sintering technique was employed to fabricate TiN nanoceramic reinforced Ti–7Al–1Mo composite. The influence of nano-TiN reinforcement additions on the densification, microstructural evolution, and mechanical properties of Ti–7Al–1Mo ternary alloy was investigated. Scanning electron microscope equipped with energy dispersive x-ray spectrometer was used to investigate the microstructural evolution. The phases present in the sintered composite were investigated using X-ray diffractometer. Unreinforced Ti–7Al–1Mo alloy showed a microstructure with distinct grain boundaries made up of Widmanstatten lath-like morphology with mainly alpha (α) phase and a small percentage of beta (β) phase. Nano-TiN reinforced Ti–7Al–1Mo composites’ morphology revealed a bimodal structure. Ti–7Al–1Mo/7TiN composite was found to possess the highest hardness value of 549 ± 22 HV1.0 and the highest compressive yield strength of 1295 ± 7 MPa, which depicts an increment of 74 HV and 323 MPa respectively when compared to unreinforced Ti–7Al–1Mo ternary alloy. The developed composites showed strong potentials for load-bearing applications.

KW - Compression

KW - Densification

KW - Microhardness

KW - Spark plasma sintering

KW - Titanium matrix composite

UR - https://www.scopus.com/pages/publications/85100635513

U2 - 10.1016/j.msea.2021.140904

DO - 10.1016/j.msea.2021.140904

M3 - Article

AN - SCOPUS:85100635513

SN - 0921-5093

VL - 807

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

M1 - 140904

ER -

Synthesis and characterization of TiN nanoceramic reinforced Ti–7Al–1Mo composite produced by spark plasma sintering

Abstract

Keywords

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