Szczegóły publikacji
Opis bibliograficzny
Carbide-controlled surface engineering of Cantor-type high-entropy alloys during FAST/SPS processing / Marcin MADEJ, Beata LESZCZYŃSKA-MADEJ // Journal of Alloys and Compounds ; ISSN 0925-8388 . — 2026 — vol. 1057 art. no. 186936, s. 1–12. — Bibliogr. s. 11–12, Abstr. — Publikacja dostępna online od: 2026-02-19
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 166272 |
|---|---|
| Data dodania do BaDAP | 2026-03-04 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jallcom.2026.186936 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Alloys and Compounds |
Abstract
In this work, a carbide-controlled surface engineering strategy for Cantor-type CoCrFeMnNi high-entropy alloys processed by field-assisted spark plasma sintering (FAST/SPS) is presented. Cylindrical compacts consisting of a monolithic HEA core surrounded by a HEA-5 wt% Ti surface layer were consolidated at 1050 °C under 50 MPa for holding times between 7.5 and 60 min. Carbon-induced interfacial reactions were investigated using XRD, SEM/EDS, EBSD and microhardness profiling. The bulk alloy retained a stable single-phase FCC structure, while carbide formation was confined to the near-surface region. Titanium addition redirected carbon transport by promoting preferential TiC precipitation, thereby suppressing chromium carbide formation and limiting chromium depletion in the matrix. Prolonged holding resulted in carbide coarsening and redistribution, producing a graded surface-core architecture with a hardened surface layer. Surface hardness increased markedly to ∼800–900 HV0.1, whereas the HEA core remained nearly constant at ∼180–220 HV0.1. These results demonstrate a technologically viable approach for tailoring wear-resistant HEA surfaces without compromising bulk phase stability, offering potential for surface-hardened structural components.
