ALFA COMPOSITES FABRICATED BY MECHANICAL ALLOYING - ANALYSIS OF THE REINFORCING PHASE DISTRIBUTION BY COMPUTED MICROTOMOGRAPHY

The paper presents the results of examinations of composite samples in which the reinforcement is waste fly ash from power plants, while matrix is an aluminium (A8). The agglomerates of master composite obtained by...

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AN INNOVATIVE METHOD FOR THE FABRICATION OF COMPOSITE RODS REINFORCED WITH WASTE MATERIALS

The paper presents the results of examinations of composite samples in which the reinforcement is waste fly ash from power plants, while matrix is aluminum (99,98 wt.%). The agglomerates of master composite obtained by mechanical alloying were sub...

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Comparison of the results of metrological tests obtained from X-ray computed tomography and optical 3D scanner

The launch of new methods in the technical metrology area is a material factor determining the quality of the products. The paper presents the methodology of analysis of metrological tests conducted with the use of computed tomography and an optic...

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Application of X-ray computed tomography to compare gravity casting to counter-gravity low-pressure air-melted process

The purpose of this paper is to evaluate the internal structure of alloys similar to AlSi9Mg (EN AC-43300), made with the counter-gravity low-pressure air-melted process (CLA) and with the gravity casting process. The X-ray computed tomography (CT...

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The use of X-ray computed tomography as a tool in assisting cast material testing

Casting manufacture depends on many factors. Technical specifications determine the required quality, which is essential for casting acceptance or rejection. Practice shows that making castings without defects is simply not possible. However, the ...

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Nanocomposite chromium coatings on aluminum alloys

Chromium coatings modified with nanodiamond particles were deposited on aluminum alloys. The concentration of the nanodiamond particles in the chrome plating electrolyte was from 5 to 25 g/l. The thickness of the layer varied between 30 and 70 &mu...

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The evaluation of microporosity and mechanical properties in high strength aluminum alloys with the use of numerical analysis and computed tomography

One of the aspects of sustainable development is the reduction of the concentration of CO2 in the atmosphere. This could be achieved for example by the reduction of fuel consumption. That is why the research for the new construction and...

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Quality check of H282 castings by Computed Tomography (CT) technique

As a part of the international project carried out at the Foundry Research Institute in Krakow in cooperation with Energy Industries of Ohio, anopen induction furnace melting technology and gravity casting of nickel superalloys have been developed...

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Evaluation of the structure of multi-layer ceramic moulds for internal discontinuities using the x-ray computed tomography method

This study presents the possibility of using x-ray computed tomography (CT) for the technological quality assessment of multi-layer ceramic moulds used in the precision casting process. Testing concepts were presented with regard to the detection ...

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