Microstructure and properties of FeCoNiCrMn and Al2O3 hybrid particle-reinforced aluminum matrix composites fabricated by microwave sintering

Wang, H.M.; Su, W.X.; Liu, J.Q.; Li, G.R.; Liu, Y.J.; Zhou, Pengjie

doi:10.1016/j.jmrt.2023.05.100

Cited by 13 publications

(2 citation statements)

References 37 publications

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“…into the HEA to prepare the HEA matrix composite has been proven to be a practical method for improving its comprehensive properties at both room temperature and elevated temperatures [14][15][16][17][18][19]. Among the various ceramic reinforcement particles, Al 2 O 3 is a good reinforcement particle due to its unique properties, such as low density, high hardness, low price, and, most importantly, its excellent chemical stability, which enables it to generally not react with the matrix alloy [1,20,21]. Therefore, several studies have been conducted on Al 2 O 3 nano-particle-reinforced HEAs [7,18,21,22].…”

Section: Introductionmentioning

confidence: 99%

“…Among the various ceramic reinforcement particles, Al 2 O 3 is a good reinforcement particle due to its unique properties, such as low density, high hardness, low price, and, most importantly, its excellent chemical stability, which enables it to generally not react with the matrix alloy [1,20,21]. Therefore, several studies have been conducted on Al 2 O 3 nano-particle-reinforced HEAs [7,18,21,22]. In our previous study, we designed and synthesized a novel CoCrFeMnNi matrix composite material with different contents of Al 2 O 3 particles via mechanical alloying (MA) and spark plasma sintering (SPS).…”

Section: Introductionmentioning

confidence: 99%

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Revealing the Microstructure Evolution and Mechanical Properties of Al2O3-Reinforced FCC-CoCrFeMnNi Matrix Composites Fabricated via Gas Atomization and Spark Plasma Sintering

Dai,

Chen,

Luo

et al. 2024

Coatings

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In the present work, novel Al2O3 particles were used to reinforce heterogeneous CoCrFeMnNi high-entropy alloy (HEA) matrix composites with nano- (5.0 wt.%) and nano- + micro- (5.0 wt.% + 10.0 wt.%) specimens. Al2O3 particles were fabricated via gas atomization and spark plasma sintering. The microstructure evolution and properties, i.e., density, hardness, and room temperature compression, were systematically investigated. The results indicate that the concentration of the Cr element in the pure CoCrFeMnNi HEA and the HEA matrix composite can be effectively reduced by using a gas-atomized HEA powder as the matrix. The formation of an impurity phase can also be inhibited, while the distribution uniformity of matrix elements can be improved. The composites prepared via gas-atomized powders formed a network microstructure composed of continuous Al2O3-rich regions and isolated Al2O3-poor regions, exhibiting good plasticity and improved density. The relative densities of the pure HEA, nano- (5.0 wt.%), and nano- + micro- (5.0 wt.% + 10.0 wt.%) composites were 98.9%, 97%, and 94.1%, respectively. The results demonstrate a significant improvement in the relative densities compared to the values (97.2%, 95.7%, and 93.8%) of the composites prepared via mechanical alloying. In addition, compared to the compressive fracture strains of nano- (5.0 wt.%) and nano- + micro- (5.0 wt.% + 10.0 wt.%) composites based on the mechanically alloyed HEA powder, the values of the nano- (5.0 wt.%) and nano- + micro- (5.0 wt.% + 10.0 wt.%) specimens prepared via gas atomization and spark plasma sintering increased by 80% and 67%, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Revealing the Microstructure Evolution and Mechanical Properties of Al2O3-Reinforced FCC-CoCrFeMnNi Matrix Composites Fabricated via Gas Atomization and Spark Plasma Sintering

Dai,

Chen,

Luo

et al. 2024

Coatings

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Preparation, Microstructure, and Mechanical Properties of Al Matrix Composites Reinforced with High‐Entropy Alloys: A Review

Ren,

Zheng,

Zhao

et al. 2024

Adv Eng Mater

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Al matrix composites (AMCs) are innovative materials prepared by introducing various reinforcements into Al alloys using suitable processes. Traditional particle‐reinforced AMCs usually have high strength but poor interfacial bonding, resulting in low plasticity. Researchers are attempting to solve this problem by identifying more proper reinforcing particles. High‐entropy alloys (HEAs) with excellent mechanical properties including high strength, ductility, and wear resistance are becoming attractive candidates for the reinforcement of Al alloys. The HEAs‐reinforced AMCs (HEAs@AMCs) combine the lightweight property of Al alloys and superior mechanical properties of HEAs. This article provides a comprehensive overview on the HEAs@AMCs, starting with an introduction to the properties of HEAs, followed by the design principle of HEAs for the metal matrix composites (MMCs). After that, the preparation, microstructure, and mechanical properties of the HEAs@AMCs are examined. In addition, the effects of HEAs on the microstructure and mechanical properties of the HEAs@AMCs are explored.This article is protected by copyright. All rights reserved.

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Microstructure and Mechanical Properties Evolution of W@WC/Fe Core–Shell Bar‐Reinforced Iron Matrix Composites: Effect of In‐situ Solid Diffusion Time

Bai,

Wang,

Kang

et al. 2024

Adv Eng Mater

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To improve the strength and toughness of conventional particle‐reinforced iron matrix composites, W@WC/Fe core–shell bar‐reinforced iron matrix composites (CBIMCs) are synthesized by casting and in‐situ solid‐phase diffusion method. These composites, which have an architecture similar to concrete, consist of a core of residual W bar and a shell of gradient‐structured WC‐Fe layer. The effect of in‐situ solid diffusion time on the evolution of microstructure and mechanical properties of the composites is investigated. It is observed that for in‐situ solid diffusion times ranging from 3 to 24 h, the reinforcement in the composites remained as W@WC/Fe core–shell bars. As the solid diffusion time increased, the diameter of the W core gradually decreased, and the thickness of the WC‐Fe shell layer increased. At a solid diffusion time of 30 h, the reinforcement transitioned to the WC‐Fe composite bar. Additionally, with longer solid diffusion times, the WC particles transformed from a triangular prism shape to a truncated octahedron. The composite prepared at 18 h exhibits the highest ultimate compression strength and strain, reaching values of 1100 ± 18 MPa and 35.5 ± 1.3%, respectively. This excellent ultimate compression strength is mainly due to the WC particles, which enhanced load transfer strengthening and dislocation strengthening. Moreover, the metal W core and iron matrix effectively hinder microcrack propagation, thus contributing to the enhanced toughness of the composite.

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Microstructure and properties of FeCoNiCrMn and Al2O3 hybrid particle-reinforced aluminum matrix composites fabricated by microwave sintering

Cited by 13 publications

References 37 publications

Revealing the Microstructure Evolution and Mechanical Properties of Al2O3-Reinforced FCC-CoCrFeMnNi Matrix Composites Fabricated via Gas Atomization and Spark Plasma Sintering

Revealing the Microstructure Evolution and Mechanical Properties of Al2O3-Reinforced FCC-CoCrFeMnNi Matrix Composites Fabricated via Gas Atomization and Spark Plasma Sintering

Preparation, Microstructure, and Mechanical Properties of Al Matrix Composites Reinforced with High‐Entropy Alloys: A Review

Microstructure and Mechanical Properties Evolution of W@WC/Fe Core–Shell Bar‐Reinforced Iron Matrix Composites: Effect of In‐situ Solid Diffusion Time

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