- Tytuł:
- The effect of cooling rate on selected structural parameters of advanced cast Ni – base superalloys
- Autorzy:
-
Belan, J.
Vaško, A.
Kuchariková, L.
Švecová, I. - Powiązania:
- https://bibliotekanauki.pl/articles/114811.pdf
- Data publikacji:
- 2017
- Wydawca:
- Stowarzyszenie Menedżerów Jakości i Produkcji
- Tematy:
-
Ni-base superalloys
quantitative metallography methods
cooling rate
secondary dendrite arms spacing
gamma prime evaluation
carbide evaluation
heat treatment
superstopy na bazie niklu
obróbka cieplna
rozstaw ramion dendrytu
rozmiar węglików
rozkład węglików
metody metalografii ilościowej - Opis:
- The Ni – base superalloys are used in aircraft industry for production of aero engine most stressed parts, as are turbine blades or turbine discs. The most stressing factor at Ni – base superalloys loading or working conditions are high temperature range of 700°C up to 850°C and, of course, centrifugal forces, and small vibrations, which produce bending of turbine blades inserted into turbine discs. All these factors cause various forms of microstructure degradation closely connected with decreasing of mechanical properties and shortening of working life as well. From this reason a dendrite arm spacing, carbides size and distribution, morphology, number and value of γ’ - phase are very important structural characteristics for blade lifetime prediction as well as aero engine its self. In this article are used methods of quantitative metallography for evaluation of structural characteristics mentioned above on experimental materials – Ni base superalloys ŽS6K and Inconel IN 738. The high temperature effect represented here by heat treatment at 800°C for 10 hours, and cooling rate, here represented by three various cooling mediums as water, air, and oil, on structural characteristics and application of quantitative methods evaluation with using of SEM are presented in this paper.
- Źródło:
-
Zeszyty Naukowe. Quality. Production. Improvement; 2017, 1 (6); 20-30
2544-2813 - Pojawia się w:
- Zeszyty Naukowe. Quality. Production. Improvement
- Dostawca treści:
- Biblioteka Nauki
Artykuł