Severe plastic deformation close to the melting point enables Mg-Fe nanocomposites with exceptional strength

Milad Roostaei; Peter Uggowitzer; Reinhard Pippan; Oliver Renk

doi:10.1016/j.scriptamat.2023.115428

Severe plastic deformation close to the melting point enables Mg-Fe nanocomposites with exceptional strength

Milad Roostaei
, Peter Uggowitzer
, Reinhard Pippan
, Oliver Renk

Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Begutachtung

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.

Originalsprache	Englisch
Aufsatznummer	115428
Seitenumfang	5
Fachzeitschrift	Scripta materialia
Jahrgang	230.2023
Ausgabenummer	June
Frühes Online-Datum	17 März 2023
DOIs	https://doi.org/10.1016/j.scriptamat.2023.115428
Publikationsstatus	Veröffentlicht - Juni 2023

Bibliographische Notiz

Funding Information:
MR acknowledges research funding from the Austrian Academy of Sciences via a DOC Fellowship (OAW21107). OR acknowledges funding from the Austrian Academy of Sciences via Innovation Fund IF 2019–37.

Publisher Copyright:
© 2023 The Authors

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SDG 9 – Industrie, Innovation und Infrastruktur

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10.1016/j.scriptamat.2023.115428

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