Characterization of powder metallurgically produced AlCrFeNiTi multi-principle element alloys

Reiberg, Marius; Kobylinski, Jonas von; Werner, Ewald

doi:10.1007/s00161-019-00820-z

Cited by 6 publications

(9 citation statements)

References 20 publications

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“…Favored by the high configurational entropy resulting from the mixing of multiple elements, HEAs are expected to form single-phase disordered solid solutions instead of intermetallic compounds [5]. In practice, heterogeneous phase compositions including the combination of solid solution with compounds can also be found in HEAs, which exhibit enhanced mechanical properties compared to single-phase solid solutions [6,7]. HEAs composed of refractory elements (also referred to as refractory HEAs) show superior high temperature properties and can be of great interest for elevated temperature applications [1,8].…”

Section: Introductionmentioning

confidence: 99%

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Strain-hardening properties of the high-entropy alloy MoNbTaTiVZr processed by high-pressure torsion

Duan

Reiberg

Kutleša

et al. 2021

Continuum Mech. Thermodyn.

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An equiatomic MoNbTaTiVZr refractory high-entropy alloy (HEA) produced by arc melting was processed by high-pressure torsion (HPT) at room temperature. Thermodynamic calculations and experimental results indicated a dual-phase microstructure composed of about 85% BCC Zr-depleted and 15% BCC Zr-rich phase in the as-cast condition. HPT causes grain refinement and an increase in dislocation density without the formation of new phases. After four revolutions, the Zr-depleted phase was hardened to $$\sim $$ ∼ 540 HV, while the Zr-rich phase exhibited softening with a decrease in hardness to $$\sim $$ ∼ 480 HV. The occurrence of a vortex-like microstructure and the analysis of elemental concentrations indicated a shear-induced mechanical homogenization, which was supposed to be the cause of the observed softening.

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Section: Introductionmentioning

confidence: 99%

“…Fig 6. High-energy X-ray diffraction (HEXRD) results and the full profile analysis using Rietveld refinement…”

mentioning

confidence: 99%

Strain-hardening properties of the high-entropy alloy MoNbTaTiVZr processed by high-pressure torsion

Duan

Reiberg

Kutleša

et al. 2021

Continuum Mech. Thermodyn.

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“…Therefore, research on HEAs focuses mainly on mechanical properties and microstructures. [41,42] In the absence of prior in-depth research results on the phase transformations kinetics of an alloying system, studying the relationship between its mechanical properties and microstructure and designing alloys with potential for industrial applications is time consuming and cost intensive. Therefore, a common method to obtain the phase composition of an alloying system is to apply thermodynamic analysis based on first principal calculations with dedicated software such as Thermo-Calc.…”

Section: Phase Transformation In Heasmentioning

confidence: 99%

A Unique Quenching and Deformation Dilatometer for Combined In Situ Neutron Diffraction Analysis of Engineering Materials

et al. 2021

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“…In a study published by M. Reiberg et al [21] regarding the AlCrFeNiTi HEA produced by mechanical alloying, the influence of reducing the aluminum content in the AlCrFeNiTi which resulted in a hardness increase was presented.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characterization of Al0.5CrFeNiTi High Entropy Alloy Produced by Powder Metallurgy Route

Geambazu,

Tălpeanu,

Bololoi

et al. 2023

Materials

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Alloys with superior properties represent the main topic of recent studies due to their effectiveness in reducing the cost of equipment maintenance and enhancing usage time, in addition to other benefits in domains such as geothermal, marine, and airspace. Al0.5CrFeNiTi was produced by solid state processing in a planetary ball mill, with the objective of obtaining a high alloying degree and a homogenous composition that could be further processed by pressing and sintering. The metallic powder was technologically characterized, indicating a particle size reduction following mechanical alloying processing when compared to the elemental raw powder materials. The microstructural analysis presented the evolution of the alloying degree during milling but also a compact structure with no major defects in the pressed and sintered bulk samples. The X-ray diffraction results confirmed the presence of face-centered cubic (FCC) and body-centered cubic (BCC) phases, predicted by the theoretical calculations, along with a hexagonal close-packed (HCP) phase, where the Al, Cr, Fe, Ni, and Ti phase was identified in both the alloyed powder material and sintered sample.

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Characterization of powder metallurgically produced AlCrFeNiTi multi-principle element alloys

Cited by 6 publications

References 20 publications

Strain-hardening properties of the high-entropy alloy MoNbTaTiVZr processed by high-pressure torsion

Strain-hardening properties of the high-entropy alloy MoNbTaTiVZr processed by high-pressure torsion

A Unique Quenching and Deformation Dilatometer for Combined In Situ Neutron Diffraction Analysis of Engineering Materials

Microstructural Characterization of Al0.5CrFeNiTi High Entropy Alloy Produced by Powder Metallurgy Route

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