Autor: Kaňa, V. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of Alloying Elements on Properties and Structure of High Chromium Cast Irons
Autorzy:: Kaňa, V.
Záděra, A.
Krutiš, V.
Powiązania:: https://bibliotekanauki.pl/articles/351222.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: high chromium cast irons
wear resistance
carbides
refinement
Opis:: The paper deals with hypereutectic high chromium cast irons. The subject of examination was the effect of various alloying elements (Ti, W, Mo, V) on the size of primary carbides and on the resultant material hardness. Using a scanning electron microscope with a wave dispersion analyser, the carbon content in carbides was established. To determine the other elements, an energy dispersion analyser was used. It was found that both the primary and the eutectic carbides were of the M₇C₃ type and very similar in composition. The carbides always contained Cr and Fe, and also W, Mo, V or Ti, in dependence on the alloying elements used. The structure of materials containing only chromium without any alloying additions exhibited coarse acicular primary carbides. The structure of materials alloyed with another element was always finer. Marked refinement was obtained by Ti alloying.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 2; 609-614
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Properties of Type SiMo Ductile Irons at High Temperatures
Autorzy:: Roučka, J.
Abramová, E.
Kaňa, V.
Powiązania:: https://bibliotekanauki.pl/articles/354702.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Si-Mo cast irons
mechanical properties at high temperatures
thermal stability of structure
oxidation resistance
Opis:: Ductile irons of the type of Si-Mo are characterized by increased resistance to long-term influence of high temperatures and cyclic temperature changes. They are mainly used in castings of combustion engine exhaust piping and other castings utilized at temperatures of up to 850°C. The aim of the study is to verify the mechanical properties of non-alloyed cast iron EN CSN GJS 450, SiMo4-0.5 and SiMo5-1 ductile irons at temperatures of 700 to 800°C, and the extent of their superficial oxidation after longterm annealing at a temperature of 900°C. Via chemical microanalysis the composition of oxidation products in the surface layer was evaluated.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 2; 601-607
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Influence of Heat Treatment and Nickel Content on the Properties of the GX4CrNi13-4 Steel
Autorzy:: Kaňa, V.
Krutiš, V.
Bořil, P.
Záděra, A.
Rimko, M.
Powiązania:: https://bibliotekanauki.pl/articles/2049568.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: martensitic steel
retained austenite
mechanical properties
heat treatment
Opis:: For the EN GX4CrNi13-4 martensitic stainless steel, research was conducted to investigate the impact of the quenching intensity and the content of nickel on the mechanical properties and amount of retained austenite. It was found that the amount of retained austenite significantly increases with growing nickel concentration. On the other hand, the cooling rate at quenching makes a difference only if the cooling is intensive, then amount of retained austenite decrease. A higher nickel content improves the mechanical properties. With more intensive cooling, the tensile strength decreases while the yield strength increases. The ductility is not significantly affected by the cooling intensity.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 1; 37-41
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

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