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Your search for porosity resulted in 12 matches...

CONVERSION COATINGS ON MAGNESIUM ALLOY DIE CASTINGS PART 1: THE EFFECT OF TECHNOLOGICAL PARAMETERS OF THE PRESSURE DIE CASTING PPROCESS ON THE QUALITY OF CASTINGS MADE FROM THE AZ91 ALLOY


The article presents the results of research on the selection of optimum technological parameters of the hot-chamber die casting machine operation to make castings in AM50 magnesium alloy, coated next with the deco...

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ANALYSIS OF THE POURING AND SOLIDIFICATION PROCESS OF ALLOYED STEEL CASTINGS FOR LOW - TEMPERATURE PERFORMANCE


The study forms a part of the program of applied industrial research executed under Target Project No. ROW-II-403/2008 at MAGNUS-NORD Sp z o.o in Toruń. Pouring and solidification of two large steel castings weigh...

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SIMULATION STUDIES (USING METHODS OF NUMERICAL CALCULATIONS) OF POURING AND SOLIDIFICATION OF SELECTED IRON ALLOY CASTINGS


The results of computer simulation carried out on MAGMAsoft and MAGMAiron programmes were presented for the technology of pouring and solidification of 35GSM steel castings and GJS400-15 and GJS600-3 ductile iron casti...

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ON THE DAMPING CAPACITY OF COMPOSITE MATERIALS


The study adresses the problem of the damping capacity of metal matrix composites based on A359 alloy reinforced with 10%, 20% and 30% SiCp, subjected to multiple remelting. The aim of the research was to prove that the recycling proces...

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Structural determinants of the mechanical properties of A359 + Al2O3 composites after multiple remelting


The article discusses the possibilities of applying direct multiple remelting as an easy as well as substantially and economically justified method of recycling composites with an A359 alloy matrix reinforced with Al2O3 parti...

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Thermophysical properties of Cu-C composites obtained by powder metallurgy


Studies of composite materials of the Cu-C type with additives of different forms of carbon (carbon nanopowder, carbon nanotubes and reduced graphene oxide) were performed by the powder metallurgy method. Based on the structural tests conducted by...

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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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Tribological characterization of high porosity aluminum based composite materials


The present work aims to study the effect of the reinforcing phase on dynamic coefficient of friction and mass wear of specimen with different compositions under various friction conditions.Porous materials with different compositions and re...

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High porosity fly ash/Ni/P composite produced by electroless deposition


The aim of the present study is to create a composite material possessing useful properties enabling the waste fly ash to be utilized. To obtain the final material, fly ash is subjected to separation by size and density. The innovative approach to...

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High-temperature interaction of molten vermicular graphite cast iron with Al2O3 substrate


The wetting behavior and reactivity between molten cast iron (originally vermicular graphite cast iron, containing in wt. %: 3.70 C, 2.30 Si, 0.44 Mn, 0.054 P, 0.017 Mg, 0.015 S) and commercial polycrystalline alumina (Al2O3 ...

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The microstructure of composite materials in the EN AW-2024 alloy matrix reinforced by α-Al2O3 particles


The paper presents the results of investigations into the microstructures of composite materials produced by pressure infiltration of preforms of ceramic α-Al2O3 particles with aluminium alloy EN AW-2024. In particular,...

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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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