TY - JOUR
T1 - Influence of spark plasma sintering temperature on the densification and micro-hardness behaviour of Ni-Cr-Al alloy
AU - Babalola, B. J.
AU - Shongwe, M. B.
AU - Jeje, S. O.
AU - Rominiyi, A. L.
AU - Ayodele, O. O.
AU - Olubambi, P. A.
N1 - Publisher Copyright:
© 2019 IOP Publishing Ltd. All rights reserved.
PY - 2019/11/8
Y1 - 2019/11/8
N2 - Sintering temperature is essential towards attaining desired densification and formation of phases which in turn influences the microstructure and properties of a material. In this study, the densification and microhardness behaviour of Ni-Cr-Al alloy prepared by spark plasma sintering (SPS) at different sintering temperatures were investigated. After sintering operation, the density, hardness, phase analysis, and microstructural evolution were investigated using the Archimede's principle, hardness tester, X-ray diffraction (XRD), and scanning electron microscopy (SEM) respectively. The nickel based alloy was sintered at temperatures of 600, 750, 950 and 1100 °C. The results indicated that the densification, microstructure, and hardness values were influenced by changes in the sintering temperature. The relative density increased from 73.89 % at 600 °C to 99.89 % at 1100 °C, while the hardness value was enhanced from 131.9 ± 2.8 HV to 404 ± 1.2 HV respectively.
AB - Sintering temperature is essential towards attaining desired densification and formation of phases which in turn influences the microstructure and properties of a material. In this study, the densification and microhardness behaviour of Ni-Cr-Al alloy prepared by spark plasma sintering (SPS) at different sintering temperatures were investigated. After sintering operation, the density, hardness, phase analysis, and microstructural evolution were investigated using the Archimede's principle, hardness tester, X-ray diffraction (XRD), and scanning electron microscopy (SEM) respectively. The nickel based alloy was sintered at temperatures of 600, 750, 950 and 1100 °C. The results indicated that the densification, microstructure, and hardness values were influenced by changes in the sintering temperature. The relative density increased from 73.89 % at 600 °C to 99.89 % at 1100 °C, while the hardness value was enhanced from 131.9 ± 2.8 HV to 404 ± 1.2 HV respectively.
UR - http://www.scopus.com/inward/record.url?scp=85076404091&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/655/1/012032
DO - 10.1088/1757-899X/655/1/012032
M3 - Conference article
AN - SCOPUS:85076404091
SN - 1757-8981
VL - 655
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012032
T2 - Conference of the South African Advanced Materials Initiative 2019, CoSAAMI 2019
Y2 - 22 October 2019 through 25 October 2019
ER -