Szczegóły publikacji
Opis bibliograficzny
As-cast microstructure, wear and oxidation resistance of Alloy 718+TiC nanocomposites processed via suction casting / Łukasz RAKOCZY, Małgorzata Grudzień-Rakoczy, Grzegorz CEMPURA, Tomasz KARGUL, Ewa Rząd, Marcin MADEJ, Tomasz Dudziak, Dawid KOZIEŃ, Rafał CYGAN, Robert CHULIST // Ceramics International ; ISSN 0272-8842 . — Tytuł poprz.: Ceramurgia International ; ISSN: 0390-5519. — 2026 — vol. 52 iss. 4, s. 4669–4686. — Bibliogr. s. 4685–4686, Abstr. — Publikacja dostępna online od: 2025-12-15. — R. Cygan - dod. afiliacja: Consolidated Precision Products, Rzeszów
Autorzy (10)
- AGHRakoczy Łukasz
- Grudzień-Rakoczy Małgorzata
- AGHCempura Grzegorz
- AGHKargul Tomasz
- Rząd Ewa
- AGHMadej Marcin
- Dudziak Tomasz
- AGHKozień Dawid
- AGHCygan Rafał
- AGHChulist Robert
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 165856 |
|---|---|
| Data dodania do BaDAP | 2026-02-06 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ceramint.2025.12.240 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Ceramics International |
Abstract
In response to the increasing demand for materials capable of withstanding harsh service conditions at elevated temperatures, this study presents a strategy to enhance the performance of Alloy 718. Ex-situ nanocomposites of Alloy 718 with varying TiC content (1.25, 2.5, 3.75 or 5.0 wt %) were produced through mechanical alloying followed by suction casting. The introduced TiC nanoparticles reacted with Alloy 718, influencing phase transformation temperatures and the resulting microstructure. The dendritic regions in both the Alloy 718 and the TiC-reinforced composites primarily consisted of the γ-matrix, while interdendritic areas contained MC-type carbides and Laves phase precipitates. Synchrotron radiation analysis and microstructural observations revealed that the partial dissolution of TiC promoted the formation of Ti,Nb-rich carbides and simultaneously reduced the amount of Laves phase during solidification. Oxidation tests in steam and an Ar+0.25 % SO2 mixture (704 °C/1000 h) showed that the Alloy 718+TiC nanocomposites experienced lower mass gain compared to the unreinforced Alloy 718, indicating enhanced oxidation resistance. The presence of TiC improved the alloy's stability in the SO2-containing environment by suppressing the formation of Ni3S2 particles. The hardness of Alloy 718, initially measured at 201 HV10, increased to 244 HV10 with the addition of 5.0 % TiC, contributing to improved wear resistance, which give a perspective to use these materials for repair of turbine blades susceptible to wear during service.
