Additive manufacturing of in-situ strengthened dual-phase AlCoCuFeNi high-entropy alloy by selective electron beam melting

Zhang, Mina; Zhou, Xianwei; Wang, Dafeng; He, Liang-Ying; Ye, Xuyang; Zhang, Wenwu

doi:10.1016/j.jallcom.2021.162259

Cited by 38 publications

(13 citation statements)

References 48 publications

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“…As a result, the bottom section, which was exposed to the heat treatment for a longer period, had a higher fraction of the FCC phase than the top part. Similar phenomena were also observed in the preheating of AlFeCoNiCu by Zhang et al [ 113 ], as illustrated schematically in Figure 7 .…”

Section: Additive Manufacturing (Am) Technologies Of High Entropy All...supporting

confidence: 83%

Additive Manufacturing Technologies of High Entropy Alloys (HEA): Review and Prospects

2023

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Additive manufacturing (AM) technologies have gained considerable attention in recent years as an innovative method to produce high entropy alloy (HEA) components. The unique and excellent mechanical and environmental properties of HEAs can be used in various demanding applications, such as the aerospace and automotive industries. This review paper aims to inspect the status and prospects of research and development related to the production of HEAs by AM technologies. Several AM processes can be used to fabricate HEA components, mainly powder bed fusion (PBF), direct energy deposition (DED), material extrusion (ME), and binder jetting (BJ). PBF technologies, such as selective laser melting (SLM) and electron beam melting (EBM), have been widely used to produce HEA components with good dimensional accuracy and surface finish. DED techniques, such as blown powder deposition (BPD) and wire arc AM (WAAM), that have high deposition rates can be used to produce large, custom-made parts with relatively reduced surface finish quality. BJ and ME techniques can be used to produce green bodies that require subsequent sintering to obtain adequate density. The use of AM to produce HEA components provides the ability to make complex shapes and create composite materials with reinforced particles. However, the microstructure and mechanical properties of AM-produced HEAs can be significantly affected by the processing parameters and post-processing heat treatment, but overall, AM technology appears to be a promising approach for producing advanced HEA components with unique properties. This paper reviews the various technologies and associated aspects of AM for HEAs. The concluding remarks highlight the critical effect of the printing parameters in relation to the complex synthesis mechanism of HEA elements that is required to obtain adequate properties. In addition, the importance of using feedstock material in the form of mix elemental powder or wires rather than pre-alloyed substance is also emphasized in order that HEA components can be produced by AM processes at an affordable cost.

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Section: Additive Manufacturing (Am) Technologies Of High Entropy All...supporting

confidence: 83%

Additive Manufacturing Technologies of High Entropy Alloys (HEA): Review and Prospects

2023

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“…This enables the accommodation of strain deeper into the CrMnFe-CoNi high entropy alloy during the machining process [165]. Electron beam remelting/selective rescanning of the previous deposited layer as a building strategy has been employed in the development of the AlCoCuFeNi high entropy alloy, which is a dual-phase alloy (having fine FCC-precipitates and BCC-solid solution matrix) [166]. This approach of deposition has been reported to have aided grain refinement and unform distribution of FCC-precipitates.…”

Section: Other Treatment Methodsmentioning

confidence: 99%

Post-processing treatments–microstructure–performance interrelationship of metal additive manufactured aerospace alloys: A review

Ojo

Taban

2023

Materials Science and Technology

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The application of Metal Additive Manufacturing (MAM) in the aerospace industry has been gaining attention. The poor surface quality of parts greatly limits the prospects of MAM-produced parts in the aerospace industry as fatigue performance hinges on a good surface finish and homogeneous microstructure. Post-processing treatments are important to improve the surface quality and the overall performance of MAM-produced parts during static and dynamic loadings. This paper provides a review of the current state of post-processing treatment options for MAM-produced parts. The advances in the post-processing treatments of MAM parts to improve fatigue strength, tensile strength, surface integrity and other properties of parts are reviewed. Future research prospects on metal additive manufacturing of aerospace parts are briefly expounded. Abbreviations: AM: Additive Manufacturing; CMT-WAAM: Cold Metal Transfer-Based Wire Arc Additive Manufacturing; CSD: Cold Spray Deposition; DA: Direct Aging; DED: Directed Energy Deposition; E: Elongation; EBAM: Wire-feed Electron Beam Additive Manufacturing; EBAM Electron Beam Additive Manufacturing; EBSD: Electron Back Scattered Diffraction; FRAM: Friction Rolling Additive Manufacturing; FSAM: Friction Stir Additive Manufacturing; FSP: Friction Stir Processing; HFDB: Hybrid Friction Diffusion Bonding; HIP: Hot Isostatic Pressing; HSA Homogenisation + Solution Treatment + Aging; IFSP: Interlayer Friction Stir Processing; IPF: Inverse Pole Figure; KAM: Kernel Average Misorientation; LAM: Laser Additive Manufacturing Process; LENS: Laser Engineered Net Shaping; LDM: Laser Deposition Manufacturing; L-PBF: Laser Powder Bed Fusion; MAM: Metal Additive Manufacturing; MTFS: Multi-track Multi-layer Friction Surfacing; O-WLAM: Wire Oscillating Laser Additive Manufacturing (O-WLAM); S: Solution Treatment; SA: Solution Treatment + aging; TEM: Transmission Electron Microscope; UAM: Ultrasonic Additive Manufacturing; UTS: Ultimate Tensile Strength; WAAM: Wire Arc Additive Manufacturing; YS: Yield Strength

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“…According to Bragg's law of cubic crystal systems (i.e. Equations (4-6)), the lattice constant of the FCC solid solution phase in cladding metal can be calculated as follows [27]:…”

Section: Macroscopic Morphology Of the Laser Remelting Layermentioning

confidence: 99%

Enhancing the (FeMnCrNiCo + TiC) cladding layer by in-situ laser remelting

Cai

Cui

Zhu

et al. 2021

Surface Engineering

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In this study, the (FeMnCrNiCo + 20%TiC) laser cladding layer was re-treated through multiplepass in-situ laser remelting. Optical microscopy, scanning electron microscopy, and X-ray diffraction were used to analyse the evolution of microstructures and phases before and after the in-situ laser remelting processes. The micro-hardness and wear resistance of the composite coatings were systematically investigated using micro-hardness and abrasion. Results show that in-situ laser remelting decreased the dilution rate. The thermal effect of laser melting and the Maragni action in the liquid coating metal enabled the large-sized and loosened ceramic particles to remelt into the cladding layers. As a result, the ceramic particles in the cladding layers after in-situ laser remelting were modified considerably in terms of their spherification rate, dimension uniformity, and particle distribution. The weak spots caused by stress on the surfaces of the cladding layers were reduced, and accordingly the wear resistances improved.

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Additive manufacturing of in-situ strengthened dual-phase AlCoCuFeNi high-entropy alloy by selective electron beam melting

Cited by 38 publications

References 48 publications

Additive Manufacturing Technologies of High Entropy Alloys (HEA): Review and Prospects

Additive Manufacturing Technologies of High Entropy Alloys (HEA): Review and Prospects

Post-processing treatments–microstructure–performance interrelationship of metal additive manufactured aerospace alloys: A review

Enhancing the (FeMnCrNiCo + TiC) cladding layer by in-situ laser remelting

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