Technológ

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Vychádza spravidla dvakrát ročne. Publikuje vedecké, výskumné, odborné, teoretické práce, návody, štúdie, recenzie, informácie o spracovaní technických materiálov. Zameriava sa na uverejňovanie príspevkov a prác venujúcich sa otázkam z oblasti trieskových a beztrieskových technológií, fyzikálnych princípov, nekonvenčných technológií, technologickosti konštrukcií nástrojov, ekonomike výrobného procesu, ekologizácii, spracovaniu odpadov. Takisto publikuje práce o strojoch, nástrojoch, prípravkoch a meracej technike pre oblasť mechanických technológií, výsledkoch výskumu vo sfére informačných technológií v technologickej oblasti. Uverejňuje práce o histórii a vývine mechanických technológií. Časopis zverejňuje príspevky v jazykoch: slovenskom, českom, poľskom, ruskom, anglickom a nemeckom.

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2024 - 20252

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Author: search.filters.author.Sýkorová, MartinaSubject: search.filters.subject.titanium

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    Kvantitatívne hodnotenie náchylnosti Al-Si-Cu-Mg zliatiny s prídavkom titánu na vznik trhlín za tepla
    (University of Žilina, 2025) Sýkorová, Martina
    This study presents a quantitative evaluation of the effect of titanium (Ti) additions on the hot-tearing susceptibility of the AlSi5Cu2Mg aluminium alloy. The AlSi5Cu2Mg aluminium alloy is used in the production of highly stressed cylinder head castings and is characterized by an increased susceptibility to hot tears. The main objective of the study was to determine the extent to which grain refinement of the aluminium alloy with an excessive amount of Ti affects its susceptibility to hot tears. Thermal analysis was performed to characterize the solidification behaviour of the experimental alloys. Grain refinement was evaluated metallographically by measuring the Dendrite Arm Spacing (DAS) index. The results confirmed that the addition of titanium led to a decrease in the hot tearing susceptibility of the AlSi5Cu2Mg alloy.
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    Vplyv Ti na mechanické a fyzikálne vlastnosti AlSi5Cu2MG zliatiny
    (University of Žilina, 2024) Sýkorová, Martina; Bolibruchová, Dana
    The hypoeutectic aluminum alloy AlSi5Cu2Mg is used in the field of high-strength cylinder head castings for the automotive sector due to its favorable combination of mechanical, physical, and foundry properties. The regulation of the chemical composition of the AlSi5Cu2Mg alloy set by the manufacturer limits the use of standard grain refiners based on Al-Ti and Al-Ti-B due to the limited content of Ti (max. 0.03 wt.%). The article is focused on the possibility of increasing the Ti content in this specific alloy above 0.03 wt. % Ti. The article investigates the effect of graded addition of Ti (0.1; 0.2 and 0.3 wt. % Ti) on the resulting mechanical and physical properties of the AlSi5Cu2Mg alloy. In this paper, the effect of T6 heat treatment on the resulting mechanical and physical properties was also evaluated. The physical properties of the experimental alloys with Ti addition decreased with increasing Ti content. No significant changes in the mechanical properties were observed due to the addition of Ti. The ductility of the experimental alloys increased positively. The best combination of mechanical and physical properties was demonstrated by AlSi5Cu2Mg alloy with the addition of 0.1 wt. % Ti.
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