Application of Artificial Neural Network to Predict the Crystallite Size and Lattice Strain of CoCrFeMnNi High Entropy Alloy Prepared by Powder Metallurgy

Nagarjuna, Cheenepalli; Dewangan, Sheetal Kumar; Sharma, Ashutosh; Lee, Kwan; Hong, Soon‐Jik; Ahn, Byungmin

doi:10.1007/s12540-022-01355-w

Cited by 19 publications

(5 citation statements)

References 27 publications

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“…This may be attributed to the Ostwald ripening process, which means larger particles dissolve and redeposit onto smaller particles, leading to a decrease in the crystallite size. However, when the lattice strain was increased from 0.302 to 0.347 due to the distortion effect caused by a dislocation in the lattice while the sintering time duration was increased, severe plastic deformation brought about a deformed lattice with a high density of dislocations . The crystallite size and lattice strain were calculated by using the mathematical equations ()–(). 1 d 2 = ( h 2 + k 2 / a 2 ) + l 2 / c 2 D normalp = k λ / ( β cos ⁡ θ ) β .25em cos nobreak0em.25em⁡ θ = k λ / D + 4 ε .25em sin nobreak0em.25em⁡ θ where h , k , and l are Miller indices and d is the interplanar spacing.…”

Section: Resultsmentioning

confidence: 99%

“…However, when the lattice strain was increased from 0.302 to 0.347 due to the distortion effect caused by a dislocation in the lattice while the sintering time duration was increased, severe plastic deformation brought about a deformed lattice with a high density of dislocations. 28 The crystallite size and lattice strain were calculated by using the mathematical equations ( 1)−(3).…”

Section: Phase Characterizationmentioning

confidence: 99%

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Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Vinoth

Wang

2023

Inorg. Chem.

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The sintering process is essential to transforming particular material into dense ceramics. Although several sintering techniques have emerged over the past few years, the process is still performed at high temperatures. The alternative cold sintering process (CSP) is a potential strategy for producing an advance high dielectric permittivity and enables densification at low temperature. In this process, the CSP technique has been applied to successfully prepare the BaTiO3/poly(vinylidene difluoride) (PVDF) nanocomposite. The inorganic material of the BaTiO3/PVDF nanocomposite was confirmed by various physical characterizations, and the densification studies were performed using a semiautomated press, indicating a dissolution–precipitation mechanism. When a uniaxial pressure of 350 MPa was applied, with transient liquid could be sintered at 190 °C, and a relative density of 94.8%. The nanocomposite exhibits an excellent dielectric properties like εr = 71.1 and tan δ = 0.04 with frequency range at 1 GHz for various dwelling times and maximize the electrical resistivity. The BaTiO3/PVDF composite indicating a breakthrough opportunity toward an increase of the high dielectric constant will be significantly impacted by cold sintering. It enables innovative materials design and integrated devices to advance modern electronic industry applications.

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Section: Resultsmentioning

confidence: 99%

Section: Phase Characterizationmentioning

confidence: 99%

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Vinoth

Wang

2023

Inorg. Chem.

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“…The powder metallurgy technique is commonly used for the preparation of high entropy alloys [46]. This method involves the mixing of elemental powders in a predetermined ratio, followed by compaction and sintering [47]. The compacted powder mixture is then subjected to high temperatures, leading to the atoms' diffusion and the solid solution's creation [13].…”

Section: Powder Metallurgy Technique For Hea Preparationmentioning

confidence: 99%

Fabrication of High Entropy Alloy by Powder Metallurgy Process

B. Aravinth,

Geetha Arumugam,

R. Mayildurai

2024

Int Res J Adv Engg Hub

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Recently, High entropy alloys have attracted a lot of interest because of their unique properties. which include outstanding strength, remarkable corrosion resistance, and consistent thermal stability. Powder metallurgy is one of the production procedures commonly used to manufacture these alloys. Metal powders are compacted and sintered to create a cohesive material in the production process known as powder metallurgy. The capacity to produce a fine-grained microstructure and a homogeneous distribution of various elements are two benefits of this technology for the synthesis of high entropy alloys. Moreover, powder metallurgy makes it possible to precisely combine various alloying constituents, which can improve the qualities of high entropy alloys even more. Powder metallurgy allows for the manufacture of intricate shapes and dimensions, rendering it well-suited to a range of uses. With the use of powder metallurgy, high entropy alloys can be fabricated with improved mechanical properties and enhanced performance.

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“…Though casting is a more convenient and less time-consuming method, it also has several disadvantages such as elemental segregation and coarse-grained dendritic structure. In contrast, powder metallurgy (PM) is an effective method that can be able to produce various nanomaterials, intermetallics, quasicrystals, as well as nanocomposites [12][13][14]15,16].…”

Section: Introductionmentioning

confidence: 99%

Surface morphology transformation and densification behaviour of conventionally sintered AlFeCoNiSi high entropy alloys

et al. 2023

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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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Application of Artificial Neural Network to Predict the Crystallite Size and Lattice Strain of CoCrFeMnNi High Entropy Alloy Prepared by Powder Metallurgy

Cited by 19 publications

References 27 publications

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Fabrication of High Entropy Alloy by Powder Metallurgy Process

Surface morphology transformation and densification behaviour of conventionally sintered AlFeCoNiSi high entropy alloys

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Application of Artificial Neural Network to Predict the Crystallite Size and Lattice Strain of CoCrFeMnNi High Entropy Alloy Prepared by Powder Metallurgy

Cited by 19 publications

References 27 publications

Cold Sintering Process for a BaTiO3/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Cold Sintering Process for a BaTiO3/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Fabrication of High Entropy Alloy by Powder Metallurgy Process

Surface morphology transformation and densification behaviour of conventionally sintered AlFeCoNiSi high entropy alloys

Contact Info

Product

Resources

About

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties

Cold Sintering Process for a BaTiO₃/Poly(vinylidene difluoride) Ceramic–Polymer Composite: Evaluation of the Structural and Microwave Dielectric Properties