Szczegóły publikacji
Opis bibliograficzny
Effect of pre-corrosion on the fatigue performance of direct energy deposited nickel–aluminum bronze (NAB) / Mojtaba Roshan, MohammadBagher Mahtabi, Wiktor BEDNARCZYK, Grzegorz CIOS, Meysam Haghshenas // Materials Chemistry and Physics ; ISSN 0254-0584 . — Tytuł poprz.: Materials Chemistry. — 2026 — vol. 349 Pt. 1 art. no. 131759, s. 1–21. — Bibliogr. s. 20–21, Abstr. — Publikacja dostępna online od: 2025-11-01
Autorzy (5)
- Roshan Mojtaba
- Mahtabi MohammadBagher
- AGHBednarczyk Wiktor
- AGHCios Grzegorz
- Haghshenas Meysam
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 164894 |
|---|---|
| Data dodania do BaDAP | 2026-01-22 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.matchemphys.2025.131759 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Materials Chemistry and Physics |
Abstract
This study investigates the ex-situ corrosion–fatigue response of nickel–aluminum bronze (NAB) fabricated via wire arc additive manufacturing (WAAM), a subset of directed energy deposition (DED). Fatigue tests were performed under fully reversed loading following controlled pre-corrosion exposure. Post-mortem fractography was employed to assess the influence of corrosion-induced surface degradation on crack initiation and fatigue life. Results showed that localized corrosion-pitting caused a pronounced shift in crack initiation sites from internal WAAM-caused volumetric defects to surface pits, leading to a substantial reduction in fatigue performance in the pre-corroded specimens relative to virgin (non-corroded) ones. Surface pits and internal volumetric defects competed as crack initiation sites, with surface pits dominating in most cases and only occasional contributions from large internal defects. Crack initiation was also frequently associated with additive layer bands, suggesting these interlayer regions are particularly susceptible to corrosion fatigue damage. The findings highlight the detrimental role of localized corrosion on the fatigue resistance of WAAM NAB and the need for effective surface protection strategies in corrosive environments like marine applications.
