Szczegóły publikacji
Opis bibliograficzny
Analysis of temperature distribution in shell mould during thin-wall superalloy casting and its effect on the resultant microstructure / Łukasz RAKOCZY, Rafał Cygan // Archives of Civil and Mechanical Engineering / Polish Academy of Sciences. Wrocław Branch, Wrocław University of Technology ; ISSN 1644-9665. — 2018 — vol. 18 iss. 4, s. 1441–1450. — Bibliogr. s. 1449-1450, Abstr. — Publikacja dostępna online od: 2018-06-27
Autorzy (2)
- AGHRakoczy Łukasz
- Cygan Rafał
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 115534 |
|---|---|
| Data dodania do BaDAP | 2018-08-08 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.acme.2018.05.008 |
| Rok publikacji | 2018 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Archives of Civil and Mechanical Engineering |
Abstract
This work focuses on the influence of temperature distribution in a shell mould during investment casting of thin wall parts on macrostructure, chemical composition of microstructural constituents and γ/γ′ misfit parameter. A reduction of production costs is associated with the optimization of precision casting technology of aircraft engine critical parts, including control of the solidification front in thin-walled castings of nickel superalloys. Appropriate lost-wax casting parameters lead to the creation of coarse grained structure, desired for high-temperature service applications. As a result of non-equilibrium solidification, substantially large chemical inhomogeneities in the dendrite core and interdendritic spaces are formed. Interdendritic spaces are occupied by constituents formed as a consequence of segregation of alloying elements, namely eutectic islands γ/γ′, borides, carbides, and an intermetallic compound of Ni and Zr. Dendrite cores consist of cubic-shaped γ′ precipitates surrounded by Ni-rich γ channels. Low lattice misfit influences cubic morphology of γ′ precipitates, which is favourable for jet engine application because it can guarantee good creep resistance.
