Effect of Homogenization on Microstructure and Hardness of Arc-Melted FeCoNiMn High Entropy Alloy During High-Pressure Torsion (HPT)

Alijani, Fatemeh; Reihanian, M.; Gheisari, Kh.; Edalati, Kaveh; Miyamoto, Hiroyuki

doi:10.1007/s11665-021-06573-8

Cited by 5 publications

(2 citation statements)

References 44 publications

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“…The dislocation density can be estimated from lattice strain and crystallite size as below [62]: where b is the Burgers vector and D is the crystallite size. Based on the calculated lattice parameters, Burgers vector was determined using for FCC and for BCC crystal structure.…”

Section: Resultsmentioning

confidence: 99%

Alloying, phases and magnetic behaviour of mechanically alloyed FeNiMnCu-based high entropy alloys

Jahani

Reihanian

Gheisari

2023

Materials Science and Technology

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In the present work, FeNiMnCuX (X: Co, Cr, Mo, Ti, W) high entropy alloys are successfully fabricated by mechanical alloying. After 15 h of milling, FeNiMnCu and FeNiMnCuCo alloys form a single FCC structure, while other alloys formed an FCC + BCC mixture structure. All alloys contained homogeneous distributions of Fe and Ni, while Cu was segregated. Alloys FeNiMnCuTi and FeNiMnCuW exhibited homogeneous distributions of Mn, whereas others exhibited Mn-rich islands. Except for the FeNiMnCuTi alloy, all alloys exhibited a soft magnetic behaviour. The saturation magnetisation of the base FeNiMnCu alloy was increased by adding Co and decreased by adding Cr, Mo, Ti, and W.

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Section: Resultsmentioning

confidence: 99%

Alloying, phases and magnetic behaviour of mechanically alloyed FeNiMnCu-based high entropy alloys

Jahani

Reihanian

Gheisari

2023

Materials Science and Technology

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“…In addition to the chemical composition of MPEAs, the conditions of SPD processing also influence the occurrence of phase transformation. 76) Namely, the method, the pressure and the temperature of SPD have an effect on phase transformation. 63,69) For instance, in the case of CoCrFeMnNi HEA the increase of the pressure of HPT above 10 GPa yielded the formation of bcc precipitates in the fcc matrix while an additional reduction of the temperature from RT to liquid nitrogen temperature (LNT, 77 K) resulted in the development of both bcc and hcp secondary phases.…”

Section: Grain Refinement During Spdmentioning

confidence: 99%

Nanostructuring of Multi-Principal Element Alloys by Severe Plastic Deformation: from Fundamentals to an Improved Functionality

Gubicza

Hung

2023

Mater. Trans.

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Multi-principal element alloys (MPEAs) are in the forefront of materials science since their compositions can be found in the undiscovered central parts of phase diagrams. These materials contain 36 elements with similar fractions, i.e., the constituents do not play the classical solvent and solute roles in the alloys. This class of materials includes high entropy alloys (HEAs). Novel MPEA compositions often have unique and superior properties compared to conventional materials. It has been shown that the features of MPEAs can be further improved by nanostructuring using severe plastic deformation (SPD) techniques. In this study, the evolution of the microstructure in MPEAs during SPDprocessing (defect formation, grain refinement and phase transformation) is overviewed on the basis of the literature. The corresponding changes of the mechanical and physical properties, such as the strength, corrosion resistance and hydrogen diffusivity are discussed. In addition, the potential applications of SPD-processed MPEAs are presented.

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Superfunctional high-entropy alloys and ceramics by severe plastic deformation

Edalati,

Fuji,

Edalati

2023

Rare Met.

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Effect of Homogenization on Microstructure and Hardness of Arc-Melted FeCoNiMn High Entropy Alloy During High-Pressure Torsion (HPT)

Cited by 5 publications

References 44 publications

Alloying, phases and magnetic behaviour of mechanically alloyed FeNiMnCu-based high entropy alloys

Alloying, phases and magnetic behaviour of mechanically alloyed FeNiMnCu-based high entropy alloys

Nanostructuring of Multi-Principal Element Alloys by Severe Plastic Deformation: from Fundamentals to an Improved Functionality

Superfunctional high-entropy alloys and ceramics by severe plastic deformation

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