Effect of ball milling on microstructure and mechanical properties of 6061Al matrix composites reinforced with high-entropy alloy particles

Chen, Weiping; Li, Zixuan; Lu, Tiwen; He, Tianbing; Li, Ruikai; Li, Bing; Wan, Biao; Fu, Zhiqiang; Scudino, Sergio

doi:10.1016/j.msea.2019.138116

Cited by 64 publications

(21 citation statements)

References 44 publications

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“…For example, Karthik et al [35] additively manufactured an Al matrix composites reinforced with CoCrFeNi particles; at the particle/matrix interface, the high-entropy (solid solution) character of HEA particles was not loosened, microstructurally no brittle IMCs were observed. The absence of IMCs at HEA particle/MM interface was also observed by Lu et al [36], Meng et al [37] and Chen et al [38] when compositionally different HEA particles (e.g., CoNiFeAl 0.4 Ti 0.6 Cr 0.5 and AlCoCrCuFeNi) were used as reinforcements to different metal matrixes (e.g., SiCp/7075Al and AZ91D).…”

Section: Introductionsupporting

confidence: 70%

Nature of CoCrFeMnNi/Fe and CoCrFeMnNi/Al Solid/Solid Interface

Zhang

2021

Acta Metall. Sin. (Engl. Lett.)

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To shed light into the application potential of high-entropy alloys as “interlayer” materials for Al-steel solid-state joining, we investigated the nature of the CoCrFeMnNi/Fe and CoCrFeMnNi/Al solid/solid interfaces, focusing on the bonding behavior and phase components. Good metallurgical bonding without the formation of hard and brittle IMC can be achieved for CoCrFeMnNi/Fe solid/solid interface. In contrast to the formation of Al5Fe2 phase at the Fe/Al interface, Al13Fe4-type IMC, in which the Fe site is co-occupied equally by Co, Cr, Fe, Mn and Ni, dominates the CoCrFeMnNi/Al interface. Although the formation of IMC at the CoCrFeMnNi/Al interface is not avoidable, the thickness and hardness of the Al13(CoCrFeMnNi)4 phase formed at the CoCrFeMnNi/Al interface are significantly lower than the Al5Fe2 phase formed at the Fe/Al interface. The activation energies for the interdiffusion of Fe/Al and CoCrFeMnNi/Al static diffusion couple are 341.6 kJ/mol and 329.5 kJ/mol, respectively. Despite this similarity, under identical static annealing condition, the interdiffusion coefficient of the CoCrFeMnNi/Al diffusion couple is significantly lower than that of the Fe/Al diffusion couple. This is thus mainly a result of the reduced atomic mobility/diffusivity caused by the compositional complexity in CoCrFeMnNi high-entropy alloy.

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Section: Introductionsupporting

confidence: 70%

Nature of CoCrFeMnNi/Fe and CoCrFeMnNi/Al Solid/Solid Interface

Zhang

2021

Acta Metall. Sin. (Engl. Lett.)

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“…Particularly, the HEAs can be fabricated into thermally-stable nanoparticles with diameters as small as 10 nm, which are ideal intermetallic nanoparticles for reinforcing aluminum alloys. Several HEAs have been incorporated into aluminum alloys to fabricate AMCs [21][22][23] through different synthesis routes, such as friction deposition (FD), spark plasma sintering (SPS), powder metallurgy (PM), and submerged friction stir processing (SFSP); Meanwhile, the mechanical properties were improved in these fabricated HEA-reinforced AMCs. Because of strong lattice distortion in their interiors and surfaces, the HEA nanoparticles can provide high volume fractions of surfaces that are more reactive and wettable to the aluminum matrix than other alloy reinforcements.…”

Section: Introductionmentioning

confidence: 99%

The Design of Aluminum-Matrix Composites Reinforced with AlCoCrFeNi High-Entropy Alloy Nanoparticles by First-Principles Studies on the Properties of Interfaces

Liu

Zheng

2022

Nanomaterials

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The present work reports the interfacial behaviors and mechanical properties of AlCoCrFeNi high-entropy alloy (HEA) reinforced aluminum matrix composites (AMCs) based on first-principles calculations. It is found the stability of HEA-reinforced AMCs is strongly dependent on the local chemical compositions in the interfacial regions, i.e., those regions containing more Ni atoms (>25%) or fewer Al atoms (<20%) render more stable interfaces in the HEA-reinforced AMCs. It is calculated that the interfacial energy of Al(001)/Al20Co19Cr19Fe19Ni19(001) interfaces varies from −0.242 eV/Å2 to −0.192 eV/Å2, suggesting that the formation of interfaces at (100) atomic plane is energetically favorable. For those constituent alloy elements presented at the interfaces, Ni could stabilize the interface whereas Al tends to deteriorate the stability of interface. It is determined that although the HEA-reinforced AMCs have less yield strength compared to aluminum, their Young’s modulus is enhanced from 69 GPa for pure Al to 134 GPa. Meanwhile, the meaningful plasticity under tension could also be improved, which are related to the chemical compositions at the interfaces. The results presented in this work could facilitate the designs of compositions and interfacial behaviors of HEA-reinforced AMCs for structural applications.

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“…Especially for the rapid prototyping process of HEAs reinforced AMCs, varied fabrication methods involving friction stir processing, additive manufacturing, and hot extrusion have been researched. [13][14][15][16][17] The field-assisted sintering is an attractive preparation method characterized as rapid low-temperature sintering. It has been reported that spark plasma sintering (SPS) possessing coupled current field, electromagnetic field, and pressure field is suitable for the composites reinforced by HEA particulates.…”

Section: Introductionmentioning

confidence: 99%

Interface Characteristics and Dynamic Compression Behaviors of Al₃₅Ti₁₅Cr₂₀Mn₂₀Cu₁₀ High‐Entroy Alloy/6061Al Composites Fabricated by Spark Plasma Sintering

et al. 2022

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Lightweight high‐entropy alloys (LWHEAs) become the research hotspot and are ideal reinforcement materials for aluminum matrix composites (AMCs). The 0, 5, and 10 vol% lightweight Al35Ti15Cr20Mn20Cu10 HEA/6061Al (HEA/Al) composites are fabricated by spark plasma sintering (SPS). The HEA–Al interfacial characteristics, dynamic compression behaviors, and failure mechanism of the composites are studied. Results show that Al35Ti15Cr20Mn20Cu10 LWHEA possesses body‐centered cubic (BCC) and face‐centered cubic (FCC) dual‐phase structures. The interfacial diffusion layer of HEA/Al is characterized as α‐Al (FCC phase) dissolved by Cr, Mn, and Si atoms, with a thickness of about 0.6 1. During dynamic compression, the introduction of Al35Ti15Cr20Mn20Cu10 LWHEA particles significantly improves the strain‐rate sensitivity of 6061Al alloy. Among them, the strain‐rate sensitivity coefficient of 10 vol% HEA/Al composites is 0.02, about four times that of the aluminum alloy matrix. Different from the micro‐failure controlled by interfacial‐debonding for AMCs reinforced by ceramic particles, the failures of HEA/Al composites are dominated by the breakage of LWHEA particles and micro‐cracks formed in the matrix, while interfacial‐debonding is rarely observed in the diffusion layers. It is concluded that a strong‐binding HEA–Al interface can effectively restrain the rapid propagation of cracks in the composites suffered by impact load.

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Effect of ball milling on microstructure and mechanical properties of 6061Al matrix composites reinforced with high-entropy alloy particles

Cited by 64 publications

References 44 publications

Nature of CoCrFeMnNi/Fe and CoCrFeMnNi/Al Solid/Solid Interface

Nature of CoCrFeMnNi/Fe and CoCrFeMnNi/Al Solid/Solid Interface

The Design of Aluminum-Matrix Composites Reinforced with AlCoCrFeNi High-Entropy Alloy Nanoparticles by First-Principles Studies on the Properties of Interfaces

Interface Characteristics and Dynamic Compression Behaviors of Al₃₅Ti₁₅Cr₂₀Mn₂₀Cu₁₀ High‐Entroy Alloy/6061Al Composites Fabricated by Spark Plasma Sintering

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Effect of ball milling on microstructure and mechanical properties of 6061Al matrix composites reinforced with high-entropy alloy particles

Cited by 64 publications

References 44 publications

Nature of CoCrFeMnNi/Fe and CoCrFeMnNi/Al Solid/Solid Interface

Nature of CoCrFeMnNi/Fe and CoCrFeMnNi/Al Solid/Solid Interface

The Design of Aluminum-Matrix Composites Reinforced with AlCoCrFeNi High-Entropy Alloy Nanoparticles by First-Principles Studies on the Properties of Interfaces

Interface Characteristics and Dynamic Compression Behaviors of Al35Ti15Cr20Mn20Cu10 High‐Entroy Alloy/6061Al Composites Fabricated by Spark Plasma Sintering

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Interface Characteristics and Dynamic Compression Behaviors of Al₃₅Ti₁₅Cr₂₀Mn₂₀Cu₁₀ High‐Entroy Alloy/6061Al Composites Fabricated by Spark Plasma Sintering