Texture formation in face-centered cubic high-entropy alloys

Sathiaraj, G. Dan; Pukenas, Aurimas; Skrotzki, Werner

doi:10.1016/j.jallcom.2020.154183

Cited by 56 publications

(29 citation statements)

References 88 publications

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“…In the FCC solid-solution state the Cantor alloy exhibits certain noteworthy mechanical properties, including simultaneous strength and ductility increase with decreasing temperature leading to outstanding fracture toughness at cryogenic temperatures, see recent review [11]. To unravel the deformation mechanisms of these advanced alloys numerous investigations of microstructure and texture have been carried out on polycrystalline samples deformed by tension, wire drawing, swaging, compression, rolling, and high-pressure torsion (HPT), for a recent review see [12]. It is found that at RT and below, above a certain stress (equivalently strain) in addition to dislocation slip mechanical twinning contributes to deformation.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Texture, and Strength Development during High-Pressure Torsion of CrMnFeCoNi High-Entropy Alloy

et al. 2020

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The equiatomic face-centered cubic high-entropy alloy CrMnFeCoNi was severely deformed at room and liquid nitrogen temperature by high-pressure torsion up to shear strains of about 170. Its microstructure was analyzed by X-ray line profile analysis and transmission electron microscopy and its texture by X-ray microdiffraction. Microhardness measurements, after severe plastic deformation, were done at room temperature. It is shown that at a shear strain of about 20, a steady state grain size of 24 nm, and a dislocation density of the order of 1016 m−2 is reached. The dislocations are mainly screw-type with low dipole character. Mechanical twinning at room temperature is replaced by a martensitic phase transformation at 77 K. The texture developed at room temperature is typical for sheared face-centered cubic nanocrystalline metals, but it is extremely weak and becomes almost random after high-pressure torsion at 77 K. The strength of the nanocrystalline material produced by high-pressure torsion at 77 K is lower than that produced at room temperature. The results are discussed in terms of different mechanisms of deformation, including dislocation generation and propagation, twinning, grain boundary sliding, and phase transformation.

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Section: Introductionmentioning

confidence: 99%

Microstructure, Texture, and Strength Development during High-Pressure Torsion of CrMnFeCoNi High-Entropy Alloy

et al. 2020

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“…The ideal texture components of FCC materials are shown schematically for φ2 = 0°, 45°, and 65° ODF sections in Fig. 12 and Table 3 [60]. In the present case, the initial texture comprises of cube (C) components as the main component and a relatively weak rotated cube (Rt-C) and brass (Bs) in the φ2 =0° (Fig.…”

Section: Texture Evolutions Upon Deformationmentioning

confidence: 81%

“…. A schematic representation of the important texture components in FCC materials[60].…”

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confidence: 99%

The high temperature mechanical properties and the correlated microstructure/ texture evolutions of a TWIP high entropy alloy

Nabizada

Zarei-Hanzaki

Abedi

et al. 2021

Materials Science and Engineering: A

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“…Thus, this is a very general behavior of these materials and, therefore, a detailed analysis of the recrystallization textures will not be carried out here. The weakening/randomization of the rolling textures after the recrystallization and grain growth of the FCC HEAs has already been reported in [32]. Thus, this is a very general behavior of these materials and, therefore, a detailed analysis of the recrystallization textures will not be carried out here.…”

Section: Resultsmentioning

confidence: 96%

“…Recently, a comprehensive review has been published by two of the present authors on the deformation and annealing textures of FCC HEAs in relation to their microstructures [32]. The review makes clear that there is still a lack of investigations on the microstructure and texture evolution of non-equiatomic FCC HEAs.…”

Section: Introductionmentioning

confidence: 98%

Effect of Stacking Fault Energy on Microstructure and Texture Evolution during the Rolling of Non-Equiatomic CrMnFeCoNi High-Entropy Alloys

et al. 2020

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The evolution of microstructure and texture in three non-equiatomic CrMnFeCoNi high-entropy alloys (HEAs) with varying stacking fault energy (SFE) has been studied in up to 90% rolling reductions at both room and cryogenic temperature. All the HEAs deform by dislocation slip and additional mechanical twinning at intermediate and shear banding at high rolling strains. The microstructure is quite heterogeneous and, with strain, becomes highly fragmented. During rolling, a characteristic brass-type texture develops. Its strength increases with a decreasing SFE and the lowering of the rolling temperature. The texture evolution is discussed with regard to planar slip, mechanical twinning, and shear banding.

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Texture formation in face-centered cubic high-entropy alloys

Cited by 56 publications

References 88 publications

Microstructure, Texture, and Strength Development during High-Pressure Torsion of CrMnFeCoNi High-Entropy Alloy

Microstructure, Texture, and Strength Development during High-Pressure Torsion of CrMnFeCoNi High-Entropy Alloy

The high temperature mechanical properties and the correlated microstructure/ texture evolutions of a TWIP high entropy alloy

Effect of Stacking Fault Energy on Microstructure and Texture Evolution during the Rolling of Non-Equiatomic CrMnFeCoNi High-Entropy Alloys

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