Severe plastic deformation close to the melting point enables Mg-Fe nanocomposites with exceptional strength
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
Autoren
Organisationseinheiten
Externe Organisationseinheiten
- Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften
Abstract
The attractive properties of Mg-bcc nanocomposites have gained increasing interest, but fabrication to bulk scales failed so far as strain immediately localizes within the Mg-phase. Targeting successful processing strategies, we analyze the deformation behavior and resulting microstructures of Mg-Fe composites as a function of applied strain and processing temperature using high-pressure torsion. Counterintuitively, processing at 73% of Mg's melting point accelerated microstructural refinement and improved homogeneity. Suppressing strain localization of the phases, a three-fold hardness increase compared to ambient processing is obtained. Such hardness levels suggest that further optimization likely paves the way towards bulk Mg-based materials beyond a gigapascal strength.
Details
Originalsprache | Englisch |
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Aufsatznummer | 115428 |
Seitenumfang | 5 |
Fachzeitschrift | Scripta materialia |
Jahrgang | 230.2023 |
Ausgabenummer | June |
Frühes Online-Datum | 17 März 2023 |
DOIs | |
Status | Veröffentlicht - Juni 2023 |