The damping performance of aluminum-based composites

Updike, Clark A.; Bhagat, R. B.; Pechersky, Martin J.; Amateau, M.F.

doi:10.1007/bf03220896

Cited by 12 publications

(6 citation statements)

References 2 publications

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“…Materials with high strength and stiffness generally have low damping. 5) Conversely, a higher damping capacity can often be attained at the expense of stiffness, strength and ductility. Nevertheless, the present composites exhibited a high damping capacity without degrading the stiffness, strength and ductility.…”

Section: Discussionmentioning

confidence: 99%

“…For example, graphite, carbon fiber, carbon powder and Al 2 O 3 fiber have been examined as reinforcements for the purpose of enhancing the resultant damping of magnesium-based composites. [5][6][7][8][9] However, the effect of the reinforcement addition is either small when the volume fraction, V f , is moderate (V f ¼ 10{25%) [7][8][9] or high only when the volume fraction is extremely high (V f $ 40%). 6) Since the discovery of fullerenes and carbon nanotubes (CNTs), a great deal of attention has been given to their characterization and potential applications.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and Damping Properties of Fullerene-Dispersed AZ91 Magnesium Alloy Composites Processed by a Powder Metallurgy Route

et al. 2006

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The microstructures and mechanical properties of fullerene powder dispersed AZ91 magnesium alloy composites were examined. The AZ91 with 0, 1 and 5 mass% fullerene additions were produced by extruding a mixture of AZ91 machined chips and fullerene powder. The matrix grains of the extruded materials were equiaxed, and the size was $ 5 mm irrespective of the fullerene content. The agglomerated fullerene powder was aligned parallel to the extrusion direction in the composites. The addition of 1 mass% fullerene had little effect on the elastic moduli, tensile strength and ductility, whereas the addition of 5 mass% fullerene slightly decreased them. A comparison between the tensile properties of the present composites and those of AZ91 alloys processed by various methods was also made. The damping capacity increased steeply by the fullerene addition. The effectiveness of the fullerene addition for the enhancement of the damping capacity of metallic alloys was verified. A good combination of damping capacity, elastic moduli, strength and ductility was attained in the present composites.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical and Damping Properties of Fullerene-Dispersed AZ91 Magnesium Alloy Composites Processed by a Powder Metallurgy Route

et al. 2006

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“…In addition to strength, weight, and corrosion resistance, another key aspect for its application is material damping. This mechanical property contributes to the absorption of undesirable mechanical vibrations, which constitute an issue for fatigue or noise control [3,4]. Therefore, considerable research has focused on improving the damping behavior of high-strength aluminum alloys [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…In the work by Updike et al [3], the influence of reinforcements on material damping was investigated. They found that graphite continuous-fiber reinforcements contributed to an increase in the damping of the high-strength alloy AA6061.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Influences Caused by Different Aging Strategies on the Strain-Dependent Damping of the High-Strength Aluminum Alloy AA7075

Lotz

Zhang

Scharifi

et al. 2022

Metals

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The present study focused on the influence of different aging conditions on the strain-dependent damping of the high-strength aluminum alloy AA7075. For this purpose, different artificial aging strategies were carried out after solution heat treatment with subsequent water quenching to identify correlations between microstructural evolution, hardness development, and individual material damping. The resulting material damping was measured using an experimental setup based on the principle of electromagnetic feedback. Scanning transmission electron microscopy (STEM) investigations were carried out using a scanning electron microscope (SEM) to characterize the material’s microstructure. Depending on the aging conditions, the damping investigations revealed specific characteristic behaviors in the strain-dependent range from 1 × 10−7 to 0.002. Peak aging conditions showed lower damping than the overaged conditions but resulted in the highest hardness. The hardness decreased with increasing aging time or temperature.

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“…Interfacial damping results from frictional energy loss caused by sliding at the reinforcement/matrix interface. In general, weak interfaces can lead to more energy dissipation [4,5]. Among different shapes of reinforcement used in MMCs, one of the highest damping improvement was reported when particulate reinforcements were used in MMCs [4].…”

Section: Introductionmentioning

confidence: 99%

Energy damping in magnesium alloy composites reinforced with TiC or Ti2AlC particles

Anasori

Barsoum

2016

Materials Science and Engineering: A

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In part I of this study, we reported on the synthesis and mechanical properties of Mg alloy composites reinforced with TiC or Ti 2 AlC particles. In this, part II, we explore their damping as a function of the nature and volume fraction of the reinforcing particles and the matrix alloy composition. Using Mg alloys instead of pure Mg and reducing the reinforcement particle size reduced the damping capabilities of these composites. In all cases, a tradeoff was found between a composite's stiffness and its damping capabilityas measured by the area enclosed in its fully and spontaneously reversible cyclic compressive stress-strain curves. Low stiffness materials, such as pure Mg and its alloys, dissipated significant amounts of energy, but only at lower stresses. The TiC reinforced composites dissipated the least energy. However, by combining two solids, Mg or its alloys with Ti 2 AlC, that are both inherently damping, it is possible to dissipate roughly 25% of total applied mechanical energy, while simultaneously maintaining ultimate compressive stresses and stiffness values that were almost as good as those of the TiC reinforced composites. However, since below 200 MPa, Ti 2 AlC does not dissipate much energy, the difference between the two was only manifested at stresses > 200 MPa. When the interfaces were strong, cyclic hardening and no fatigue were observed; when the interfaces were weak, cyclic softening and fatigue were recorded. Most importantly, we show that the energy needed to extend or bow out the dislocationsthat are presumably strongly pinned and postulated to be the mechanism for energy dissipationis a linear function of the applied stresses for the end members -Mg and Ti 2 AlCand is even more pronounced for the composites.

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The damping performance of aluminum-based composites

Cited by 12 publications

References 2 publications

Mechanical and Damping Properties of Fullerene-Dispersed AZ91 Magnesium Alloy Composites Processed by a Powder Metallurgy Route

Mechanical and Damping Properties of Fullerene-Dispersed AZ91 Magnesium Alloy Composites Processed by a Powder Metallurgy Route

Microstructural Influences Caused by Different Aging Strategies on the Strain-Dependent Damping of the High-Strength Aluminum Alloy AA7075

Energy damping in magnesium alloy composites reinforced with TiC or Ti2AlC particles

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