The influence of nano TiN additions on mechanical properties and fracture behaviour of spark plasma sintered SAF 2205

Samuel Ranti Oke, Mahlatse R. Mphahlele, Oladeji Oluremi Ige, Oluwasegun Eso Falodun, Babatunde Abiodun Obadele, Peter Apata Olubambi

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

Abstract

The influences of TiN additions on microstructure, mechanical properties and fracture behaviour of the SAF 2205-TiN composites were investigated. Automated spark plasma sintering machine (model HHPD-25, FCT GmbH Germany) was used to fabricate the composites. Characterization was performed using Scanning Electron Microscopy. Archimedes principle was used to evaluate the densities of the composites. Hardness (H) and elastic modulus (E) were investigated by nanoindentation using load 1 mN. The results obtained indicated that SPS process parameters were optimized at 1150 °C, 15 min and 100 oC/min. The microstructure revealed that the TiN particles have a general tendency to segregate at the grain boundaries. The hardness (H) and elastic modulus (E) values increased with TiN contents due to the hardening and stiffening effects of the TiN reinforcements. With increase in TiN content, the dimples on the fracture surfaces of the composites reduced drastically with only faint traces of the dimples left. A combination of ductile and brittle fractures is prevalent in the 6 and 8 % TiN.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2017, MS and T 2017
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages1172-1174
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

Fingerprint

Electric sparks
Plasmas
Mechanical properties
Composite materials
Elastic moduli
Hardness
Microstructure
Spark plasma sintering
Ductile fracture
Brittle fracture
Nanoindentation
Hardening
Reinforcement
Grain boundaries
Scanning electron microscopy
Syntex adjuvant formulation

All Science Journal Classification (ASJC) codes

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

Cite this

Oke, S. R., Mphahlele, M. R., Ige, O. O., Falodun, O. E., Obadele, B. A., & Olubambi, P. A. (2017). The influence of nano TiN additions on mechanical properties and fracture behaviour of spark plasma sintered SAF 2205. In Materials Science and Technology Conference and Exhibition 2017, MS and T 2017 (pp. 1172-1174). (Materials Science and Technology Conference and Exhibition 2017, MS and T 2017; Vol. 2). Association for Iron and Steel Technology, AISTECH. https://doi.org/10.7449/2017/MST-2017-1172-1174
Oke, Samuel Ranti ; Mphahlele, Mahlatse R. ; Ige, Oladeji Oluremi ; Falodun, Oluwasegun Eso ; Obadele, Babatunde Abiodun ; Olubambi, Peter Apata. / The influence of nano TiN additions on mechanical properties and fracture behaviour of spark plasma sintered SAF 2205. Materials Science and Technology Conference and Exhibition 2017, MS and T 2017. Association for Iron and Steel Technology, AISTECH, 2017. pp. 1172-1174 (Materials Science and Technology Conference and Exhibition 2017, MS and T 2017).
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abstract = "The influences of TiN additions on microstructure, mechanical properties and fracture behaviour of the SAF 2205-TiN composites were investigated. Automated spark plasma sintering machine (model HHPD-25, FCT GmbH Germany) was used to fabricate the composites. Characterization was performed using Scanning Electron Microscopy. Archimedes principle was used to evaluate the densities of the composites. Hardness (H) and elastic modulus (E) were investigated by nanoindentation using load 1 mN. The results obtained indicated that SPS process parameters were optimized at 1150 °C, 15 min and 100 oC/min. The microstructure revealed that the TiN particles have a general tendency to segregate at the grain boundaries. The hardness (H) and elastic modulus (E) values increased with TiN contents due to the hardening and stiffening effects of the TiN reinforcements. With increase in TiN content, the dimples on the fracture surfaces of the composites reduced drastically with only faint traces of the dimples left. A combination of ductile and brittle fractures is prevalent in the 6 and 8 {\%} TiN.",
author = "Oke, {Samuel Ranti} and Mphahlele, {Mahlatse R.} and Ige, {Oladeji Oluremi} and Falodun, {Oluwasegun Eso} and Obadele, {Babatunde Abiodun} and Olubambi, {Peter Apata}",
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Oke, SR, Mphahlele, MR, Ige, OO, Falodun, OE, Obadele, BA & Olubambi, PA 2017, The influence of nano TiN additions on mechanical properties and fracture behaviour of spark plasma sintered SAF 2205. in Materials Science and Technology Conference and Exhibition 2017, MS and T 2017. Materials Science and Technology Conference and Exhibition 2017, MS and T 2017, vol. 2, Association for Iron and Steel Technology, AISTECH, pp. 1172-1174, Materials Science and Technology Conference and Exhibition 2017, MS and T 2017, Pittsburgh, United States, 10/8/17. https://doi.org/10.7449/2017/MST-2017-1172-1174

The influence of nano TiN additions on mechanical properties and fracture behaviour of spark plasma sintered SAF 2205. / Oke, Samuel Ranti; Mphahlele, Mahlatse R.; Ige, Oladeji Oluremi; Falodun, Oluwasegun Eso; Obadele, Babatunde Abiodun; Olubambi, Peter Apata.

Materials Science and Technology Conference and Exhibition 2017, MS and T 2017. Association for Iron and Steel Technology, AISTECH, 2017. p. 1172-1174 (Materials Science and Technology Conference and Exhibition 2017, MS and T 2017; Vol. 2).

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

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AU - Oke, Samuel Ranti

AU - Mphahlele, Mahlatse R.

AU - Ige, Oladeji Oluremi

AU - Falodun, Oluwasegun Eso

AU - Obadele, Babatunde Abiodun

AU - Olubambi, Peter Apata

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N2 - The influences of TiN additions on microstructure, mechanical properties and fracture behaviour of the SAF 2205-TiN composites were investigated. Automated spark plasma sintering machine (model HHPD-25, FCT GmbH Germany) was used to fabricate the composites. Characterization was performed using Scanning Electron Microscopy. Archimedes principle was used to evaluate the densities of the composites. Hardness (H) and elastic modulus (E) were investigated by nanoindentation using load 1 mN. The results obtained indicated that SPS process parameters were optimized at 1150 °C, 15 min and 100 oC/min. The microstructure revealed that the TiN particles have a general tendency to segregate at the grain boundaries. The hardness (H) and elastic modulus (E) values increased with TiN contents due to the hardening and stiffening effects of the TiN reinforcements. With increase in TiN content, the dimples on the fracture surfaces of the composites reduced drastically with only faint traces of the dimples left. A combination of ductile and brittle fractures is prevalent in the 6 and 8 % TiN.

AB - The influences of TiN additions on microstructure, mechanical properties and fracture behaviour of the SAF 2205-TiN composites were investigated. Automated spark plasma sintering machine (model HHPD-25, FCT GmbH Germany) was used to fabricate the composites. Characterization was performed using Scanning Electron Microscopy. Archimedes principle was used to evaluate the densities of the composites. Hardness (H) and elastic modulus (E) were investigated by nanoindentation using load 1 mN. The results obtained indicated that SPS process parameters were optimized at 1150 °C, 15 min and 100 oC/min. The microstructure revealed that the TiN particles have a general tendency to segregate at the grain boundaries. The hardness (H) and elastic modulus (E) values increased with TiN contents due to the hardening and stiffening effects of the TiN reinforcements. With increase in TiN content, the dimples on the fracture surfaces of the composites reduced drastically with only faint traces of the dimples left. A combination of ductile and brittle fractures is prevalent in the 6 and 8 % TiN.

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Oke SR, Mphahlele MR, Ige OO, Falodun OE, Obadele BA, Olubambi PA. The influence of nano TiN additions on mechanical properties and fracture behaviour of spark plasma sintered SAF 2205. In Materials Science and Technology Conference and Exhibition 2017, MS and T 2017. Association for Iron and Steel Technology, AISTECH. 2017. p. 1172-1174. (Materials Science and Technology Conference and Exhibition 2017, MS and T 2017). https://doi.org/10.7449/2017/MST-2017-1172-1174