Principles and Baseline Knowledge of Functionally Graded Aluminium Matrix Materials (FGAMMs): Fabrication Techniques and Applications

Ebhota, Williams S.; Karun, Akhil S.; Inambao, Freddie L.

doi:10.4028/www.scientific.net/jera.26.47

Cited by 13 publications

(11 citation statements)

References 48 publications

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“…Its importance with FGMs is considered inevitable, as it involves a combination of distinct materials. The pin-on-disc tribometer is a commonly employed experimental setup used to study adhesive wear [18,19]. Parametric influence during the tribological analysis of MMCs were validated using Taguchi's technique, which are a crucial tool for the design of high-quality systems.…”

Section: Introductionmentioning

confidence: 99%

Studies on Adhesive Wear Characteristics of Centrifugally Cast Functionally Graded Ceramic Reinforced Composite

Sriram¹,

Radhika²,

Sam³

et al. 2020

IJAME

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Functionally graded material containing LM13 aluminium alloy as matrix and alumina as reinforcement (10 wt. %) was fabricated (Φout150 × Φin90 × 100 mm) by centrifugal casting. Samples were machined from the cylindrical cast along its longitudinal axis. Variation in hardness along the radial cross-sectional wall revealed 33.7% improvement at the outer periphery due to higher presence of alumina. This zone was preferred for dry sliding wear experiments, designed based on Taguchi L27 orthogonal array by varying the process parameters like sliding velocity, sliding distance and load using pin-on-disc tribometer. Analysis of variance revealed velocity as most influential wear factor, next to load. An optimal condition to minimise adhesive wear was determined at a load of 15 N, sliding velocity of 3.5 m/s and sliding distance of 1250 m. Scanning electron microscope analysis on abraded surfaces showed formation of tribolayer at high velocities and delamination at high loads.

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Section: Introductionmentioning

confidence: 99%

Studies on Adhesive Wear Characteristics of Centrifugally Cast Functionally Graded Ceramic Reinforced Composite

Sriram¹,

Radhika²,

Sam³

et al. 2020

IJAME

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show abstract

“…Considering a vertical centrifugal casting, a particle suspended in molten metal is subjected to four types of Figure 12. Schematic of a vertical centrifugal casting machine [46].…”

Section: Forces Acting On Particle In a Meltmentioning

confidence: 99%

“…Production of a preform has three fundamental steps [46]: processing of liquid powder, pressing and shaping, and sintering the preform. The concept behind a preform is the combination of a ceramic powder slurry and a sacrificial organic pore forming agent (PFA) that will undergo pyrolysis.…”

Section: Preformmentioning

confidence: 99%

“…Functionally graded material comprises of two or more component phases with continuous and gradually changing composition [3,4]; they are characterised by continuous transitions in the material's microstructure and composition in a specific direction [5]. FGM gradually vary over volume in both microstructure and composition, resulting in subsequent alterations in the material properties.…”

Section: Introductionmentioning

confidence: 99%

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Casting and Applications of Functionally Graded Metal Matrix Composites

Ebhota¹,

Jen²

2018

Advanced Casting Technologies

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This chapter discusses the concepts, casting techniques and applications of functionally graded materials metal matrix composites (FGMMCs). Considerations were given to bulk functionally graded aluminium matrix composites (FGAACs) production processes. Liquid-metal forging processes of FGAACs fabrication, such as infiltration process, squeeze casting, friction casting or compocasting, stir, and centrifugal casting were discussed. The chapter provides basic concepts of the processes and overview of their processing parameters, such as mould rotational speed; reinforcement particles size and volume; degassing method; melting and pouring temperatures; pressure; and stirrer. The study notes that functionally graded materials (FGMs) are commonly used in automotive, aircraft, aviation, chemical, medical, engineering, renewable energy, nuclear energy, and optics electronics industries.

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“…Several techniques have been established and used to improve the properties of aluminium and its alloys. The concept behind these methods is modiication of the material's microstructure, which ultimately alters the properties of the material [2].…”

Section: Introductionmentioning

confidence: 99%

Effects of Modification Techniques on Mechanical Properties of Al-Si Cast Alloys

Ebhota¹,

Jen²

2017

Aluminium Alloys - Recent Trends in Processing, Characterization, Mechanical Behavior and Applications

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Mechanical, physical and chemical properties of a part depend on the size, morphology and dispersion of the constituents of the microstructure of the part's material. Therefore, this chapter discusses the diferent processes of altering the microstructure of Al-Si-based alloys to desired functional properties. These processes, commonly called modiication methods, were broadly categorised into three: chemical, thermal and mechanical methods. Chemical method, which involves the addition of some elements, in trace levels, to alloys to be modiied, is the best modiication option. The elements for modifying are called modiiers. The three commonly used modiiers (sodium, Na, strontium, Sr and antimony, Sb) are discussed. The chapter, however, notes that for optimal alloy's mechanical atributes, thermal treatment is usually combined with both chemical and mechanical modiication processes. The thermal method involves rapid cooling of alloy for modiication, while the mechanical method depends on force to break up large α-Al dendrites and plate-like Si phases.

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Principles and Baseline Knowledge of Functionally Graded Aluminium Matrix Materials (FGAMMs): Fabrication Techniques and Applications

Cited by 13 publications

References 48 publications

Studies on Adhesive Wear Characteristics of Centrifugally Cast Functionally Graded Ceramic Reinforced Composite

Studies on Adhesive Wear Characteristics of Centrifugally Cast Functionally Graded Ceramic Reinforced Composite

Casting and Applications of Functionally Graded Metal Matrix Composites

Effects of Modification Techniques on Mechanical Properties of Al-Si Cast Alloys

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