Review of recent trends and developments in aluminium 7075 alloy and its metal matrix composites (MMCs) for aircraft applications

Khalid, Muhammad Yasir; Umer, Rehan; Khan, Kamran Ahmed

doi:10.1016/j.rineng.2023.101372

Cited by 80 publications

(11 citation statements)

References 140 publications

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“…Among the Aluminium Alloys (AAs), the AA7075 highly attracts researchers due to its wide applications, especially in the aerospace industry [4]. The addition of metallic carbides, oxides, and nitrides like SiC, B 4 C, BN, and Al 2 O 3 to the AA7075 has improved its strength to meet the demand for speci c applications [5,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Calcium Silicate on Mechanical and Frictional Wear Behaviors of AA7075 Hybrid Composites: A Statistical Analysis

2024

Preprint

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Recently, Aluminium Alloy (AA) 7075 based Metal Matrix Composites (MMC) have been widely used in aerospace applications due to their high strength to density ratio, but it mostly fails in tribo applications. The addition of ceramic material like Al2O3 to the AA7075 Hybrid Composites (AHCs) has improved their wear and thermal properties, but the density of the AHCs has also increased. In this regard, it is essential to identify a low-density ceramic to improve the wear resistance of the AHCs without affecting their density or mechanical strength. For the study on the effect of Ca2SiO4 on the AHCs, the AHCs/Al2O3/Ca2SiO4 samples were successfully fabricated and tested in terms of mechanical and frictional wear properties. The fabricated AHCs had a relative density of around 3.54±0.05% higher than AA7075, which is due to the impact of high-density ceramic Al2O3 reinforcement. The lowest specific wear rate is obtained for the AHCs/Al2O3(10 wt. %)/Ca2SiO4(8 wt. %) at the high applied load and the low sliding velocity, which is around 1.44 x 10-6 g/Nm, and its corresponding CoF is 0.158. Finally, the wear maps are developed from the contour plots of responses to identify the cause and consequences of the wear mechanism during the dry sliding of AHCs.

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Section: Introductionmentioning

confidence: 99%

Effect of Calcium Silicate on Mechanical and Frictional Wear Behaviors of AA7075 Hybrid Composites: A Statistical Analysis

2024

Preprint

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“…The structure and phase composition of novel materials can significantly improve their physical and mechanical properties (relative to present materials) and provide stable operation at higher temperatures. The creation of metal matrix composites, comprising a metal/intermetallic matrix and ceramic particles, is currently one of the key trends in the development of novel materials [4][5][6]. Dispersion hardening of metal matrix materials by ceramic particles enhances their physical and mechanical properties, namely hardness, wear resistance, and strength both at room and higher temperatures [7,8].…”

Section: Introductionmentioning

confidence: 99%

Nano- and Submicron-Sized TiB2 Particles in Al–TiB2 Composite Produced in Semi-Industrial Self-Propagating High-Temperature Synthesis Conditions

Matveev,

Promakhov,

Schulz

et al. 2024

Metals

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This paper investigates the structure and phase composition of Al–TiB2 metal matrix composites prepared from the Al–Ti–B system powder using self-propagating high-temperature synthesis (SHS) in semi-industrial conditions (the amount of the initial powder mixture was 1000 g). The samples produced in semi-industrial conditions do not differ from the laboratory samples, and consist of the aluminum matrix and TiB2 ceramic particles. The temperature rise leads to the growth in the average size of TiB2 particles from 0.4 to 0.6 µm as compared to the laboratory samples. SHS-produced composites are milled to the average particle size of 42.3 µm. The powder particles are fragmented, their structure is inherited from the SHS-produced Al–TiB2 metal matrix composite. The obtained powder can be used as the main raw material and additive in selective laser sintering, vacuum sintering, and hot pressing products. It is worth noting that these products can find their own application in the automotive industry: brake pads, drums, rail discs, etc.

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“…Aluminium and its alloys are also suitable as matrices of composite materials. The use of aluminium in composites makes it possible to further improve the properties of composites, such as hardness and the modulus of elasticity, while reducing the density of the material at the same time [7,8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Degassing Efficiency on a Foundry Degassing Unit Using Different Rotor Types

Kolínský,

Prášil,

Socha

et al. 2024

Applied Sciences

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The present paper describes a comparison of the efficiency of different types of rotors used in the refining of aluminium melt at a foundry degassing unit (FDU). Physical modelling was used to obtain data for six different rotor types under defined experimental conditions. In order to evaluate the data from the physical model, an evaluation method based on the interpolation of degassing curves was developed in such a way that the resulting characteristic can be expressed by a single parameter. Using the new methodology, the datasets were replaced by a single dimensionless parameter, a, which characterizes the rotor performance at a given gas flow rate. Based on the comparison of these performance parameters, it was possible to mutually compare the rotor efficiency depending on the selected conditions. The comparison is also demonstrated on the expected degassing time to a certain required concentration. Based on the physical model results, the study found that rotor D had the highest degassing efficiency, followed by rotors F and A. Rotors B and E had similar efficiency at a flow rate of 17 Nl·min−1. However, rotor B showed better efficiency at higher inert gas flow rates (19 and 21 Nl·min−1), while rotor E showed better efficiency at lower flow rates (13 and 15 Nl·min−1).

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Review of recent trends and developments in aluminium 7075 alloy and its metal matrix composites (MMCs) for aircraft applications

Cited by 80 publications

References 140 publications

Effect of Calcium Silicate on Mechanical and Frictional Wear Behaviors of AA7075 Hybrid Composites: A Statistical Analysis

Effect of Calcium Silicate on Mechanical and Frictional Wear Behaviors of AA7075 Hybrid Composites: A Statistical Analysis

Nano- and Submicron-Sized TiB2 Particles in Al–TiB2 Composite Produced in Semi-Industrial Self-Propagating High-Temperature Synthesis Conditions

Comparison of Degassing Efficiency on a Foundry Degassing Unit Using Different Rotor Types

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