Compocasting (semisolid-semisolid, SS) and its two variations: SL (semisolid- liquid) and LL (liquid-liquid) process routes are used to make Al reinforced. SUMMARY: Al18B4O33 particle and whisker reinforced magnesium alloy ( AZ91D and. ZK60) composites were fabricated by the compocasting. Compo-casting is a type of stir casting method where the metal is heated to semi- solid state instead of liquid state.
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Hybrid composite specimen is obtained by compocasting procedure.
Compocasting Research Papers –
In the first group are the results that Corrosion did not affect SiC particles in the composites. The composites were obtained by a modified compocasting procedure. In the paper were shown the test results of tribological characteristics of hybrid composites with alloy base A reinforced by SiC and graphite. Tribological tests were performed pfocess a block-on-disc tribometer without lubrication.
Tribological tests are realized Tribological test results showed that, for the investigated conditions, both composites had improved wear resistance and similar coefficient of friction with the reference material gray cast iron.
Ads help cover our server costs. Sliding distance of m was constant. The mechanical properties of the composite are improved in relation to the base alloy. The tests were done for different normal load values, sliding speeds, sliding distance, with and without lubrication. Tribological testing have been conducted on a block-on-disc tribometer with three varying loads 10, 20 and 30 N and three sliding speeds 0.
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This paper presents a short summary of the researches conducted in past few years concerning the MMCs with A Al-Si alloy matrix and different second phase.
The composites were produced by compo casting technique and then subjected to the thermal treatment T4 regime. Al2O3 particles as reinforcement were added into the semi-solid A alloy by infiltration and admixing. The analysis showed that comppocasting sliding speed has the greatest influence on specific wear rate This article analyzes the influence clmpocasting graphite reinforcement, load, sliding speed, and sliding distance on tribological behavior of A aluminum matrix composites reinforced with silicon carbide and graphite using the full-factorial design.
The analysis has shown the presence of MML, which means that there was transfer of material from steel disc to composite block. Using of Al-alloys for producing of engine cylinders and blocks, instead of gray cast iron, results with weight savings and lower fuel consumption and therefore reduced pollution.
Composite materials were produced by the compocasting process using mechanical mixing of the matrix, i.
Remember me on this computer. One of the possible solutions for overcoming of poor Click here to sign up. In this paper, the basic characteristics microstructure and hardness and tribological properties of two A Al-Si alloy base MMCs, reinforced with Al2O3 particles were analysed and compared with gray cast iron as a standard material for cylinder blocks. MMCs based on hypoeutectic Al-Si alloy: By the experimental plan, test is conducted under three different values of sliding speed, three different values of normal load, different sliding distances, and also different compoczsting.
Microstructural examinations were performed after day exposure of thermally treated composites in the sodium-chloride solution.
A regression analysis and experiment corroboration was conducted in order to verify the results of the optimization. In the first group are the results that concern the influences of amount and size of reinforcement Al2O3and in the second group are the results that concern the influences of type of reinforcement Al2O3 and SiC and graphite.
A side by side investigation of the microstructure and hardness of the composite and the base alloy cast into a steel mould was done. Tribological behavior of aluminum hybrid composites studied by application of compocastihg techniques.
The main parameter analyzed in the paper is coefficient of friction obtained in the conditions with and without lubrication.
Help Center Find new research papers in: The effects of load, sliding speed, weight percentage of graphite reinforcement, and sliding distance on the wear rate are A aluminium alloy is used as a base matrix alloy, Application of the compocasting process led to a transformation of a dendritic to a nondendritic structure of the base alloy.
The results are divided in two groups. The goal of the paper was to optimize the influencing parameters in order to minimize specific wear rate using the Taguchi method. Skip to main content.
The local progress of corrosion in depth of the composite matrix was noticed in micro-cracks. Tribological tests are realized on tribometer with block on disc compact pair in Tribological Center of Faculty of Engineering in Kragujevac. Specific wear rate prediction was done using artificial neural network ANN. The testing included sliding speeds of 0.
A side by side investigation of the microstructure and hardness of the composite and the base alloy Tribological properties in dry sliding conditions. These samples were additionally pressed in a special tooling by which tensile test proceas were obtained. Log In Sign Up. Hybrid composites are obtained by compo casting procedure.
Corrosion processes have occurred in the composite matrix.