“…This may be due to the development of lattice distortion in the lattice sites. The intermetallic phase, identified as Ni 3 Si (space group pm3false¯m, a = b = c = 3.542 Å, PDF# 65-0143), was formed in the case of the maximum Si amount added to HEAs [31]. Figure 7 SEM images (a, b, c, d and e) of sintered AlFeCoNiSi x ( x = 0, 0.2, 0.4, 0.6 and 0.8) HEAs sinters and XRD pattern (f) at 900°C.…”
Section: Resultsmentioning
confidence: 99%
“…This may be due to the development of lattice distortion in the lattice sites. The intermetallic phase, identified as Ni 3 Si (space group pm 3m, a = b = c = 3.542 Å, PDF# 65-0143), was formed in the case of the maximum Si amount added to HEAs [31].…”
Section: Conventional Sintering At 900°cmentioning
confidence: 99%
“…It is also observed that the formation of necks is gradual and extends upwards with the sintering temperature increased to 1000°C. The sintering force is generally defined as the equilibrium state in which the mechanical force balances the surface tension forces, resulting in the formation of multiple interconnected pores in the compact [31]. Moreover, increasing the sintering temperature leads to stable changes in the crystallite size of the HEAs.…”
Section: Conventional Sintering At 1000°cmentioning
A preliminary study has been performed to understand the effect of pressureless sintering on the surface morphology of the AlFeCoNi alloy by the addition of the Si element. This study aims to determine the possibility of achieving the densification of high entropy alloy using the conventional sintering technique. The results indicate that the HEAs have a single-phase BCC structure even with the addition of Si. The thermodynamic simulation (CALPHAD) was used to predict the phase formation. The variation of crystallite sizes and lattice strains caused by sintering temperatures was also discussed. In addition, densification mechanisms occurring with the different sintering temperatures have been discussed. The formation of porosity was observed, however, the density of HEAs improved with increasing sintering temperature. Ultimately, it was suggested that the present HEAs required higher sintering temperatures and a longer time to achieve high density.
“…This may be due to the development of lattice distortion in the lattice sites. The intermetallic phase, identified as Ni 3 Si (space group pm3false¯m, a = b = c = 3.542 Å, PDF# 65-0143), was formed in the case of the maximum Si amount added to HEAs [31]. Figure 7 SEM images (a, b, c, d and e) of sintered AlFeCoNiSi x ( x = 0, 0.2, 0.4, 0.6 and 0.8) HEAs sinters and XRD pattern (f) at 900°C.…”
Section: Resultsmentioning
confidence: 99%
“…This may be due to the development of lattice distortion in the lattice sites. The intermetallic phase, identified as Ni 3 Si (space group pm 3m, a = b = c = 3.542 Å, PDF# 65-0143), was formed in the case of the maximum Si amount added to HEAs [31].…”
Section: Conventional Sintering At 900°cmentioning
confidence: 99%
“…It is also observed that the formation of necks is gradual and extends upwards with the sintering temperature increased to 1000°C. The sintering force is generally defined as the equilibrium state in which the mechanical force balances the surface tension forces, resulting in the formation of multiple interconnected pores in the compact [31]. Moreover, increasing the sintering temperature leads to stable changes in the crystallite size of the HEAs.…”
Section: Conventional Sintering At 1000°cmentioning
A preliminary study has been performed to understand the effect of pressureless sintering on the surface morphology of the AlFeCoNi alloy by the addition of the Si element. This study aims to determine the possibility of achieving the densification of high entropy alloy using the conventional sintering technique. The results indicate that the HEAs have a single-phase BCC structure even with the addition of Si. The thermodynamic simulation (CALPHAD) was used to predict the phase formation. The variation of crystallite sizes and lattice strains caused by sintering temperatures was also discussed. In addition, densification mechanisms occurring with the different sintering temperatures have been discussed. The formation of porosity was observed, however, the density of HEAs improved with increasing sintering temperature. Ultimately, it was suggested that the present HEAs required higher sintering temperatures and a longer time to achieve high density.
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