Effect of Heating Rate on the Microstructure and Mechanical Properties of Spark Plasma Sintered CNTs Reinforced Nickel Aluminide

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, 800 °C and 5 min respectively. The heating rate was varied between 50 and 150 °C/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.

• Periodical: Key Engineering Materials (Volume 821)
• Pages: 440-444
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.821.440
• Online since: September 2019
• Authors: Olusoji Oluremi Ayodele*, Mary Awotunde, Mxolisi Brendon Shongwe, Adewale Oladapo Adegbenjo, Bukola Joseph Babalola, Babatunde A. Obadele, Peter Apata Olubambi
• Keywords: Microstructure, Nickel Aluminide, Powder Metallurgy, Spark Plasma Sintering

References

[1] Bidabadi A S, Enayati M H, Dastanpor E, Varin R A and Biglari M, Nanocrystalline intermetallic compounds in the Ni–Al–Cr system synthesized by mechanical alloying and their thermodynamic analysis, Journal of Alloys and Compounds. 581(2013) 91-100.

DOI: 10.1016/j.jallcom.2013.07.037

[2] Jozwik P, Polkowski W, and Bojar Z, Applications of Ni3Al based intermetallic alloys—current stage and potential perceptivities, Materials. 8(2015) 2537-2568.

DOI: 10.3390/ma8052537

[3] Ameri S, Sadeghian Z, and Kazeminezhad I, Effect of CNT addition approach on the microstructure and properties of NiAl-CNT nanocomposites produced by mechanical alloying and spark plasma sintering, Intermetallics. 76(2016) 41-48.

DOI: 10.1016/j.intermet.2016.06.010

[4] Dey G, Physical metallurgy of nickel aluminides, Sadhana. 28(2003) 247-262.

DOI: 10.1007/bf02717135

[5] Lui E, Gao Y, Jia J, Bai Y and Wang W, Microstructure and mechanical properties of in situ NiAl–Mo2C nanocomposites prepared by hot-pressing sintering, Material Science and Engineering. 592(2014) 201-206.

DOI: 10.1016/j.msea.2013.06.078

[6] Zhang Z H, Lui Z F, Lu J F, Shen X B, Wang F C and Wang Y D, The sintering mechanism in spark plasma sintering–Proof of the occurrence of spark discharge, Scripta materialia. 81(2014) 56-59.

DOI: 10.1016/j.scriptamat.2014.03.011

[7] Singla D, Amulya K and Murtaza Q, CNT reinforced aluminium matrix composite-A Review." Materials, Today. 2(2015) 2886-2895.

DOI: 10.1016/j.matpr.2015.07.248

[8] Chatterjee G S, Chatterjee S, Ray K A and Chakraborty KA, Graphene–metal oxide nanohybrids for toxic gas sensor: a review, Sensor and Actuators B Chemical. 221(2015) 1170-1181.

DOI: 10.1016/j.snb.2015.07.070

[9] Munir K S, Zhang Y, Zhang D, Lin J, Li Y and Wen C, Microstructure and mechanical properties of carbon nanotubes reinforced titanium matrix composites fabricated via spark plasma sintering Materials Science and Engineering. 688(2017) 505-523.

DOI: 10.1016/j.msea.2017.02.019

[10] Obadele B A, Ige O O and Olubambi P A, Fabrication and characterization of titanium-nickel-zirconia matrix composites prepared by spark plasma sintering, Journal of Alloys and Compounds.710(2107) 825-830.

DOI: 10.1016/j.jallcom.2017.03.340

[11] Suárez M, Fernandez A, Menendez J L, Torrecillas R, Kessel H U, Hennicke J, Kirchner R and Kessel T, Challenges and Opportunities for Spark Plasma Sintering: A Key Technology for a New Generation of Materials, InTech. 13 (2013).

DOI: 10.5772/53706

[12] Wei S, Zhang Z H, Wang F C, Shen X B, Cai H N, Lee S K and Wang L, Effect of Ti content and sintering temperature on the microstructures and mechanical properties of TiB reinforced titanium composites synthesized by SPS process, Material Science and Engineering. (2013) 249-255.

DOI: 10.1016/j.msea.2012.09.064

[13] Kandukuri S, A FAST winner for fully dense nano powders, Metal powder Report. (2009) 22-27.

DOI: 10.1016/s0026-0657(08)70161-9

[14] Suryanarayana C, Mechanical alloying and milling, Progress in Materials Science. (2001) 1-184.