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| Naji, M. |
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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Trzaska, Maria
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Publications (7/7 displayed)
- 2023Properties of Ni-B/B Composite Coatings Produced by Chemical Reductioncitations
- 2020Influence of heat treatment on properties of Ni-B/B composite coatingscitations
- 2019Structure and mechanical properties of nanocrystalline Ni/Cu multilayer coatings produced by the electrocrystallization methodcitations
- 2018Preparation and properties of nanocrystalline Ni/graphene composite coatings deposited by electrochemical methodcitations
- 2016Preparation and mechanical properties of alumina composites reinforced with nickel-coated graphenecitations
- 2011The effect of the diffusive, composite chromium nitride layers produced by a hybrid surface treatment on the corrosion behavior of AZ91D magnesium alloycitations
- 2005Influence of the ceramic reinforcement on the fatigue strength of the aluminum-matrix composites subjected to electrodischarge machining
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booksection
Influence of the ceramic reinforcement on the fatigue strength of the aluminum-matrix composites subjected to electrodischarge machining
Abstract
<p>The materials examined were the composites with an Al+20%Si+3%Cu+1%Mg matrix reinforced with 5% of Al<sub>2</sub>O<sub>3</sub>, SiC or Si<sub>3</sub>N<sub>4</sub> particles. The composites were produced by powder metallurgy using hot extrusion. The samples intended for fatigue tests were cut off composite rods using an electricdischarge machine tool equipped with a 0.25 mm brass wire which functioned as the electrode (WEDM). Fatigue tests were conducted under pulsed tension. Samples of the same materials, but prepared by traditional methods, i.e. by grinding, were also tested for the sake of comparison. The samples machined by the electrodischarge method had lower fatigue strength than the samples subjected to grinding. This is related with the different states of the surface layer. After the WEDM machining, the surface layer, a dozen or so micrometers thick, has a fine-crystalline structure with hardness higher than that of the material beneath, it is porous and occasionally contains microcracks. The highest fatigue strength was shown by the composite reinforced with SiC particles.</p>