Comparative analysis of particle size on the mechanical and metallurgical characteristics of Al2O3-reinforced sintered and extruded AA2014 nano-hybrid composite:
TL;DR: In this article, the authors compared the effect of var variances in aluminum metal matrix composites (AMCs) and found that variances had a negative effect on the performance of AMCs.
Abstract: Aluminum metal matrix composites (AMCs) are having exotic properties which attract the research community to develop new nano-composite material. The aim of the work is to compare the effect of var...
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TL;DR: In this paper, the experimental analysis aimed to fabricate low cost, lightweight metal matrix composite using Al 6061 as matrix material and alumina (Al2O3) and bagasse ash as reinforcing material through stir...
Abstract: This experimental analysis aimed to fabricate low cost, lightweight metal matrix composite using Al 6061 as matrix material and alumina (Al2O3) and bagasse ash as reinforcing material through stir ...
22 citations
TL;DR: In this paper, adding different reinforcements to the polymer composite is gaining more importance in the manufacturing industries because of their variation in mechanical properties, to satisfy modern industrial requirements, such as high temperature and high humidity.
Abstract: Adding different reinforcements to the polymer composite is gaining more importance in the manufacturing industries because of their variation in mechanical properties. To satisfy modern industrial...
19 citations
TL;DR: In this paper, the authors investigated the properties and specific wear rate of Al 6061 reinforced with silicon carbide (SiC) with different weight percentages in Al6061 by using microstructure image of the composites for ensuring the distribution of the reinforcement through SEM.
4 citations
TL;DR: In this paper, a predictive analytical model has been modified to estimate the yield strength of austenitic-steel-based nanocomposites reinforced with nano-ZrO2 particle.
3 citations
TL;DR: The phosphor bronze (PB) is widely preferred in various engineering applications due to its high strength, toughness, fine grain size, low coefficient of friction, and better corrosion resistance.
Abstract: The phosphor bronze (PB) is widely preferred in various engineering applications due to its high strength, toughness, fine grain size, low coefficient of friction, and better corrosion resistance. ...
3 citations
Cites background from "Comparative analysis of particle si..."
...The application of this material is in the fast-growing fields, such as automotive, aerospace, infrastructure, power drives, commercial goods, and so on.(1) In the development of MMC, the commonly preferred matrices are aluminum, magnesium, copper, and titanium and its alloys....
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25 Aug 2009-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, a new method was used in stir casting to fabricate nano-Al2O3 particulate reinforced aluminum composites and avoid agglomeration and segregation of particles.
Abstract: In this study, a new method was used in stir casting to fabricate nano-Al2O3 particulate reinforced aluminum composites and avoid agglomeration and segregation of particles. Different volume fractions of nano-alumina particles were incorporated into the A356 aluminum alloy by a mechanical stirrer and then cylindrical specimens were cast and tested. The microstructural characterization of the composite samples showed uniform distribution of reinforcement, grain refinement of aluminum matrix, and presence of the minimal porosity. The effects of nano-Al2O3 particle content on the mechanical properties of the composites were investigated. Based on experiments, it was revealed that the presence of nano-Al2O3 reinforcement led to significant improvement in hardness, 0.2% yield strength, UTS and ductility. This combination of enhancement in UTS and ductility exhibited by nano-Al2O3 reinforced aluminum is due to uniform distribution of reinforcement and grain refinement of aluminum matrix.
346 citations
TL;DR: In this paper, the effect of alumina particle size, sintering temperature and time on the properties of Al-Al 2 O 3 composite were investigated, including density, hardness, microstructure, yield strength, compressive strength and elongation to fracture.
345 citations
TL;DR: In this paper, the fabrication of aluminum (6061-T6) matrix composites (AMCs) reinforced with various weight percentage of B 4 C particulates by modified stir casting route is discussed.
323 citations
TL;DR: In this article, the effects of microstructure (namely, particulate volume fraction and particulate size) and the counterface materials on the dry-sliding wear resistance of the aluminum matrix composites 2014A1-SiC and 6061Al-Al2O3 were studied.
Abstract: The effects of microstructure (namely, particulate volume fraction and particulate size) and the counterface materials on the dry-sliding wear resistance of the aluminum matrix composites 2014A1-SiC and 6061Al-Al2O3 were studied. Experiments were performed within a load range of 0.9 to 350 N at a constant sliding velocity of 0.2 ms-1. Two types of counterface materials, SAE 52100 bearing steel and mullite, were used. At low loads, where particles act as loadbearing constituents, the wear resistance of the 2014A1 reinforced with 15.8 µm diameter SiC was superior to that of the alloy with the same volume fraction of SiC but with 2.4 µm diameter. The wear rates of the composites worn against a steel slider were lower compared with those worn against a mullite slider because of the formation of iron-rich layers that act asin situ solid lubricants in the former case. With increasing the applied load, SiC and A12O3 particles fractured and the wear rates of the composites increased to levels comparable to those of unreinforced matrix alloys. The transition to this regime was delayed to higher loads in the composites with a higher volume percentage of particles. Concurrent with particle fracture, large strains and strain gradients were generated within the aluminum layers adjacent to contact surfaces. This led to the subsurface crack growth and delamination. Because the particles and interfaces provided preferential sites for subsurface crack initiation and growth and because of the propensity of the broken particles to act as third-body abrasive elements at the contact surfaces, no improvement of the wear resistance was observed in the composites in this regime relative to unreinforced aluminum alloys. A second transition, to severe wear, occurred at higher loads when the contact surface temperature exceeded a critical value. The transition loads (and temperatures) were higher in the composites. The alloys with higher volume fraction of reinforcement provided better resistance to severe wear. Wearing the materials against a mullite counterface, which has a smaller thermal conductivity than a counterface made of steel, led to the occurrence of severe wear at lower loads.
303 citations
TL;DR: In this paper, the effects of adding nano-alumina particles to Al6061 alloy and extrusion process on the mechanical and microstructure properties of the composites were investigated.
251 citations