Alloying Behavior and Properties of FeSiBAlNiCox High Entropy Alloys Fabricated by Mechanical Alloying and Spark Plasma Sintering

Wang, Wen; Li, Boyu; Zhai, Sicheng; Xu, Jin; Niu, Zuozhe; Xu, Jing; Wang, Yan

doi:10.1007/s12540-018-0047-1

Cited by 23 publications

(1 citation statement)

References 32 publications

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“…Among other methods, the manufacturing of LWHEA using advanced powder metallurgy is an attractive and superior method that can provide improved microstructure. In particular, the production of LWHEA through HEBM and SPS is a low-temperature process, relatively easy in composition control, and has the advantage of controlling the microstructure through the HEBM approach [19][20][21]. Besides, even if the difference in the melting point of each element is large, it has the advantage of manufacturing an alloy successfully [18,22].…”

Section: Introductionmentioning

confidence: 99%

Lightweight AlCuFeMnMgTi High Entropy Alloy with High Strength-to-Density Ratio Processed by Powder Metallurgy

Chae

Sharma

et al. 2020

Met. Mater. Int.

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In this study, we synthesized a new Al 16.6 Cu 16.6 Fe 16.6 Mn 16.6 Mg 16.6 Ti 16.6 lightweight high entropy alloy (LWHEA) by high energy ball milling and spark plasma sintering (SPS). The effect of milling time (15, 30, 45, and 60 h) and SPS conditions (600 and 700 °C) on microstructure, hardness, and density of LWHEAs were studied. The results showed that milled LWHEA is base centered cubic (BCC) structured, consisting of dual BCC1/BCC2 matrix with dispersed minor Cu 2 Mg precipitates and Ti. After SPS of milled samples, the BCC2 phase fraction was increased gradually. The distribution of Ti was uniform up to 45 h milled sample SPSed at 600 °C. However, porosity was built up beyond 45 h milling and higher SPS temperature (700 °C). The presence of finer secondary phases in the HEA matrix contributes to the dispersion hardening. The optimum microhardness and density of LWHEA AlCuFeMnMgTi were around 770 HV and 4.34 g cm − 3 which is superior to other conventional alloys such as Al or Ti-based alloys.

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Section: Introductionmentioning

confidence: 99%

Lightweight AlCuFeMnMgTi High Entropy Alloy with High Strength-to-Density Ratio Processed by Powder Metallurgy

Chae

Sharma

et al. 2020

Met. Mater. Int.

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Recent Advances on High‐Entropy Alloys for 3D Printing

et al. 2020

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Boosted by the success of high-entropy alloys (HEAs) manufactured by conventional processes in various applications, the development of HEAs for three-dimensional (3D) printing has been advancing rapidly in recent years. 3D printing of HEAs gives rise to great potential for manufacturing geometrically complex HEA products with desirable performances, thereby inspiring their increased manifestation in industrial applications. In this paper, a comprehensive review of the recent achievements of 3D printing of HEAs is provided, in the aspects of their powder development, printing processes, microstructures, properties and potential applications. It begins with the introduction of the fundamentals of 3D printing and HEAs as well as the unique properties of 3D-printed HEA products. The processes for the development of HEA powders, including atomization and mechanical alloying, and the powder properties are then presented. Thereafter, typical processes for printing HEA products from powders, namely, directed energy deposition, selective laser 2 melting and electron beam melting, are discussed with regard to the phases, crystal features, mechanical properties, functionalities and potential applications of these products (particularly in the aerospace, energy, molding and tooling industries). Finally, perspectives are outlined to provide guidance for future research.

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