Investigation of microstructure, mechanical, and tribological properties of SiC/h-BN/Gr hybrid reinforced Al6061 matrix composites produced by hot extrusion method

Çinici, Henifi; Karakoç, Halil; Şahin, Ömer; Ovalı, İsmail

doi:10.1016/j.diamond.2023.110028

Cited by 10 publications

(2 citation statements)

References 62 publications

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“…To process bulk nanocrystalline materials, the mechanically alloyed powders are subjected to sintering at elevated temperatures [84][85][86]. The most effective sintering methods are the hot-press sintering [87,88], hot extrusion [89,90], spark plasma sintering (SPS) [66,91], and microwave sintering [92].…”

Section: Introductionmentioning

confidence: 99%

The Microstructure and Properties of Al–Mn–Cu–Zr Alloy after High-Energy Ball Milling and Hot-Press Sintering

Yakovtseva,

Mochugovskiy,

Prosviryakov

et al. 2024

Metals

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In the present research an Al–7.7%Mn–4.9%Zr–3.2%Cu (wt%) alloy was processed by mechanical alloying (MA) followed by hot press sintering. The microstructure, phase composition, and mechanical properties of the MA granules and sintered samples were investigated. The dissolution of Mn, Zr, and Cu with further precipitation of the Al6Mn phase were observed during high-energy ball milling. In the alloy processed without stearic acid after milling for ~10 h, an Al-based solid solution with ~4.9 wt%Zr, ~3.2 wt%Cu and a ~5 wt%Mn with a grain size of ~16 nm and a microhardness of ~530 HV were observed. The addition of stearic acid facilitated Mn dissolution and precipitation of the Al6Mn phase during milling but led to the formation of the ZrH2 phase that decreased the Zr solute and the microhardness. Precipitation of the Al6Mn, L12–Al3Zr, and Al2Cu phases during annealing and sintering of the MA granules in the temperate range of 350–375 °C was observed, and an additional Al20Cu2Mn3 phase was precipitated at 400–450 °C. Hot-press sintering at 450 °C provided a low fraction of cavities of ~1.5%, the yield strength of 1100 MPa, ultimate compressive strength of 1200 MPa, strain at fracture of 0.5% at room temperature, the yield strength of 380 MPa, ultimate compressive strength of 440 MPa, and strain at fracture of 3.5% at 350 °C. The microstructural evolution during high-temperature deformation on the sample surface was studied and the differences in deformation behavior for the alloys sintered at different temperatures were discussed.

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Section: Introductionmentioning

confidence: 99%

The Microstructure and Properties of Al–Mn–Cu–Zr Alloy after High-Energy Ball Milling and Hot-Press Sintering

Yakovtseva,

Mochugovskiy,

Prosviryakov

et al. 2024

Metals

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“…Various reinforcement materials, such as ceramics, nitrides, oxides, graphene, and fibers, are commonly utilized in the production of metal matrix composites. Hybrid reinforced metal matrix composites (HRMMCs), one type of composite material, have been widely studied to meet industrial requirements [15][16][17]. HRMMCs are seen as a new generation of materials that can replace single-reinforced composites by increasing the performance of the materials using two or more reinforcement elements in the structure [18].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Wear Resistance and Mechanical Behaviors of AA7020 Alloys Using Hybrid Fe3O4-GNP Reinforcement

Taşcı,

Yılmaz,

Karakoç

et al. 2024

Lubricants

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This study investigates the effect of graphene nanoplatelets (GNPs) and milling duration on the microstructure, mechanical properties, and wear resistance of the AA7020 alloy reinforced with Fe3O4 and GNP. The composites were prepared with a fixed 10 wt.% Fe3O4 and varying GNP contents (0.5 and 1 wt.%) using high-energy ball milling for 4 and 8 h, followed by hot pressing. The aim was to enhance the performance of the AA7020 alloy for potential use in defense, automotive, aviation, and space applications, where superior mechanical properties and wear resistance are required. The results showed that the incorporation of 0.5 wt.% GNP and optimized milling significantly improved the composite’s performance. The AA7020 + 10 wt.% Fe3O4 + 0.5 wt.% GNP composite achieved the highest density (99.70%) when milled for 4 h. Its hardness increased with both the inclusion of GNP and extended milling duration, with the composite milled for 8 h exhibiting the highest hardness value (149 HBN). The tensile strength also improved, with the composite milled for 4 h showing a 28% increase (292 MPa) compared with the unreinforced alloy. Additionally, the friction coefficient decreased with GNP content and milling duration, with the composite milled for 8 h showing a 26% reduction. Wear resistance was notably enhanced, with the composite milled for 8 h exhibiting the lowest specific wear rate (7.86 × 10−7 mm3/Nm).

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Enhancing tribological, mechanical, and microstructural properties of AA6061 composites with ceramic reinforcements (CrC, NbC, TaC) through friction stir processing

Moustafa,

Melaibari,

Alajlani

2024

J Mater Sci

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Investigation of microstructure, mechanical, and tribological properties of SiC/h-BN/Gr hybrid reinforced Al6061 matrix composites produced by hot extrusion method

Cited by 10 publications

References 62 publications

The Microstructure and Properties of Al–Mn–Cu–Zr Alloy after High-Energy Ball Milling and Hot-Press Sintering

The Microstructure and Properties of Al–Mn–Cu–Zr Alloy after High-Energy Ball Milling and Hot-Press Sintering

Enhancing Wear Resistance and Mechanical Behaviors of AA7020 Alloys Using Hybrid Fe3O4-GNP Reinforcement

Enhancing tribological, mechanical, and microstructural properties of AA6061 composites with ceramic reinforcements (CrC, NbC, TaC) through friction stir processing

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