Effect of Microstructure on the Deformation Mechanism of Friction Stir-Processed Al0.1CoCrFeNi High Entropy Alloy
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In this article, a grain refinement from several millimeters in as-received (AR) condition to the range of 0.35-15μm was achieved by friction stir processing (FSP).Abstract:
Grain refinement from several millimeters in as-received (AR) condition to the range of 0.35–15 μm was achieved by friction stir processing (FSP). Due to the sluggish nature of atomic diffusion in high entropy alloys (HEAs), the FSP region exhibited an immense variation in microstructure which was directly attributed to the accumulated plastic strain during FSP. In accordance with the Hall–Petch relationship, yield strength (YS) has increased by a factor of four after grain refinement while maintaining large uniform elongation (UE). The Kocks–Mecking plot indicated different deformation mechanisms operative in both FSP and AR conditions.read more
Citations
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High entropy alloys: A focused review of mechanical properties and deformation mechanisms
TL;DR: In this article, the authors provide a detailed review of the deformation mechanisms of HEAs with the complex concentrated alloys (CCAs) with the FCC and BCC structures, highlighting both successes and limitations.
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Friction stir welding/processing of metals and alloys: A comprehensive review on microstructural evolution
Akbar Heidarzadeh,Sergey Mironov,Rustam Kaibyshev,Gürel Çam,Aude Simar,Adrian P. Gerlich,Farzad Khodabakhshi,Amir Mostafaei,David P. Field,Joseph D. Robson,Alexis Deschamps,Philip J. Withers +11 more
TL;DR: In this article, a comprehensive understanding of the fundamentals of the microstructural evolution during FSW/P has been developed, including the mechanisms underlying the development of grain structures and textures, phases, phase transformations and precipitation.
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Mechanical behavior of high-entropy alloys
TL;DR: In this article, the authors present a comprehensive, critical review of the mechanical behavior of high-entropy alloys and some closely related topics, including thermodynamics and kinetics.
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Fatigue behavior of a wrought Al 0.5 CoCrCuFeNi two-phase high-entropy alloy
TL;DR: In this paper, the fatigue behavior of a cold-rolled two-phase Al0.5CoCrCuFeNi high-entropy alloy (HEA) was studied.
Journal ArticleDOI
Enhancement of strength-ductility trade-off in a high-entropy alloy through a heterogeneous structure
S.W. Wu,G. Wang,Qi Wang,Y.D. Jia,J. Yi,Qijie Zhai,Jiabin Liu,Baoan Sun,Haijian Chu,Jun Shen,Peter K. Liaw,C.T. Liu,Tong-Yi Zhang +12 more
TL;DR: In this paper, the authors present a heterogeneous-structures-architecting strategy, in which they design bulk high-entropy alloys with the largelyenhanced strength-ductility trade-off, possessing a yield strength of 711 MPa, a tensile strength of 928 MPa and a uniform elongation of 30.3%.
References
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Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes
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TL;DR: The concept of high entropy introduces a new path of developing advanced materials with unique properties, which cannot be achieved by the conventional micro-alloying approach based on only one dominant element as mentioned in this paper.
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The influences of temperature and microstructure on the tensile properties of a CoCrFeMnNi high-entropy alloy
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TL;DR: In this article, an equiatomic CoCrFeMnNi high-entropy alloy, which crystallizes in the face-centered cubic (fcc) crystal structure, was produced by arc melting and drop casting.
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Solid‐Solution Phase Formation Rules for Multi‐component Alloys
TL;DR: In this article, the factors of the atomic size difference Delta and the enthalpy of mixing ΔH mιx of the multi-component alloys were summarized from the literatures.
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Refractory high-entropy alloys
TL;DR: In this article, two refractory high-entropy alloys with nearequiatomic concentrations, WNB-Mo-Ta and WBMCV, were produced by vacuum arc melting and the lattice parameters were determined with high-energy X-ray diffraction using a scattering vector length range from 0.7 to 20A−1.