Effect of heating rate on the microstructure and mechanical properties of spark plasma sintered cnts reinforced nickel aluminide

O. O. Ayodele, M. A. Awotunde, M. B. Shongwe, A. O. Adegbenjo, B. J. Babalola, B. A. Obadele, P. A. Olubambi

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

Abstract

Powder metallurgy method was used to consolidate nickel aluminide reinforced multi-walled carbon nanotubes through planetary ball mill in order to facilitate the effective dispersion of carbon nanotubes (CNTs). In this investigation, 0.5 wt% of CNTs was added to the powder mixture of nickel and aluminum through two ball milling processes: low energy ball mill (LEBM) and high energy ball mill (HEBM). The bulk composites were synthesized by spark plasma sintering (SPS) at constant temperature, holding time, pressure of 32 MPa, 800oC and 5 min respectively. The heating rate was varied between 50 and 150oC/min. Microstructural evolutions of the composites were studied and densification of the composites was improved with increase in heating rate but depreciated as the heating rate was further increased. Vickers microhardness values of the fabricated composites were enhanced with increase in heating rate.

Original languageEnglish
Title of host publicationKey Engineering Materials IX
EditorsAlexander M. Korsunsky
PublisherTrans Tech Publications Ltd
Pages440-444
Number of pages5
ISBN (Print)9783035714807
DOIs
Publication statusPublished - Jan 1 2019
Externally publishedYes
Event9th International Conference on Key Engineering Materials, ICKEM 2019 - Oxford, United Kingdom
Duration: Mar 29 2019Apr 1 2019

Publication series

NameKey Engineering Materials
Volume821 KEM
ISSN (Print)1013-9826

Conference

Conference9th International Conference on Key Engineering Materials, ICKEM 2019
CountryUnited Kingdom
CityOxford
Period3/29/194/1/19

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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    Ayodele, O. O., Awotunde, M. A., Shongwe, M. B., Adegbenjo, A. O., Babalola, B. J., Obadele, B. A., & Olubambi, P. A. (2019). Effect of heating rate on the microstructure and mechanical properties of spark plasma sintered cnts reinforced nickel aluminide. In A. M. Korsunsky (Ed.), Key Engineering Materials IX (pp. 440-444). (Key Engineering Materials; Vol. 821 KEM). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.821.440