Innovative processing routes in manufacturing of metal matrix composite materials

Ružić, Jovana; Simić, Milena; Stoimenov, Nikolay; Božić, D.; Stašić, J.

doi:10.30544/629

Cited by 5 publications

(1 citation statement)

References 25 publications

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“…This alloy has good mechanical strength, ductility, hardness, fatigue strength, pressure tightness, fluidity, and machinability. A356 alloy is used in many industrial applications, such as airframe castings, machine parts, truck chassis parts, aircraft and missile components, and structural parts requiring high strength [1][2][3][4][5][6]. We used Fly Ash (FA) as reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Indentation Size Effect of Composite A356 + 6%FA Subjected to ECAP

Muslić¹,

Orešković

Rede

et al. 2022

Metals

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In this study, metal matrix-based composite (MMC) was subjected to Equal Chanel Angular Pressing (ECAP) in several passes to determine the influence of deformation on the hardness of the samples. Composite based on A356 aluminum alloy and reinforced with Fly Ash (FA) particles was obtained by the compo casting method. The microstructural analyses and microhardness measurements were performed on the cast and pressed samples. Vickers hardness measurement of composite samples was performed with different indentation load sizes: HV0.02, HV0.05, HV0.1 and HV0.2. Results showed that hardness increases after each ECAP pass. The lowest hardness value of 42 (HV0.02) as well as the lowest arithmetical mean value of 46 (HV0.2) was measured at the cast composite. The greatest composite hardness of 107 (HV0.1) and the highest arithmetical mean value of 94 (HV0.1) was measured at the three-time pressed sample. The mathematical model named Meyer’s law was used for data analysis. In the cast sample, a decrease in hardness was detected with increasing indentation load, termed Indentation Size Effect (ISE), was confirmed with Meyers index n = 1.9112 < 2. Pressed samples showed opposite behavior—an increase in hardness with increasing indentation load—where Meyers index n > 2 indicated Reverse Indentation Size Effect (RISE). For all samples, a high coefficient of determination R2 > 0.99 confirmed that Meyer’s law described this phenomenon well.

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Section: Introductionmentioning

confidence: 99%

Indentation Size Effect of Composite A356 + 6%FA Subjected to ECAP

Muslić¹,

Orešković

Rede

et al. 2022

Metals

View full text Add to dashboard Cite

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Fracture and Wear Behavior of Functionally Graded 316L–TiC Composite Fabricated by Selective Laser Melting Additive Manufacturing

Yazdani,

Tekeli,

Rabieifar

et al. 2024

steel research int.

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Herein, the tribological and fracture behavior of multilayer 316L–TiC composites produced by the selective laser melting additive manufacturing process is investigated. The results show a robust interface between the layers and no cracks are detected even after a flexural strain of 0.4. The hardness of the composite layers with 5 and 10 wt% TiC increases by 75.5 and 104.8% compared to the hardness of the pure 316L stainless steel layer. Transverse rupture strength measurements show that a layer of pure 316L significantly improves the rupture strength of the multilayer samples. Wear test results show that the inclusion of TiC particles increases wear resistance, with the composite layer containing 10 wt% TiC demonstrating the highest wear resistance.

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The influence of boron addition on properties of copper-zirconium alloys

et al. 2023

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Copper-zirconium alloys with high conductivity were produced using powder metallurgy. Two-steps manufacturing process, containing mechanical alloying followed by hot pressing, was applied in achieving improved mechanical and physical properties of Cu-Zr alloy. In this paper, the influence of boron on Cu-Zr alloys properties was studied on Cu-1Zr (wt.%) and Cu-1.1Zr-0.3B (wt.%) systems. Scanning electron microscopy, laser nanoparticle sizer, computed tomography and X-ray diffraction were employed for observation of changes in the microstructure during production steps. More specifically - variations in size of the Cu particles, powder mixtures? structural parameters, and development of CuZr phase in binary alloy, CuZr phase and ZrB2 particles in ternary alloy were observed. It was shown that presence of boron increases dislocation density in ternary alloy over the mechanical alloying time compared to binary alloy. The results presented in this study show higher hardening effect in Cu-Zr- B alloy compared to Cu-Zr alloy, resulting in stable hardness values during thermomechanical treatment. Further, it can be seen that finely dispersed reinforcing ZrB2 particles in copper matrix does not have significant influence on its conductivity. Moreover, both systems Cu-Zr and Cu-Zr-B exhibit better electrical conductivity after thermomechanical treatment as a result of zirconium reduction in solid solution due to its precipitation.

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Innovative processing routes in manufacturing of metal matrix composite materials

Cited by 5 publications

References 25 publications

Indentation Size Effect of Composite A356 + 6%FA Subjected to ECAP

Indentation Size Effect of Composite A356 + 6%FA Subjected to ECAP

Fracture and Wear Behavior of Functionally Graded 316L–TiC Composite Fabricated by Selective Laser Melting Additive Manufacturing

The influence of boron addition on properties of copper-zirconium alloys

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