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 Institute of Materials Science

Research output: Contribution to journal › Article › Research › peer-review

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.

Original language	English
Article number	115428
Number of pages	5
Journal	Scripta materialia
Volume	230.2023
Issue number	June
Early online date	17 Mar 2023
DOIs	https://doi.org/10.1016/j.scriptamat.2023.115428
Publication status	Published - Jun 2023

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

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10.1016/j.scriptamat.2023.115428

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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.",

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AU - Roostaei, Milad

AU - Uggowitzer, Peter

AU - Pippan, Reinhard

AU - Renk, Oliver

PY - 2023/6

Y1 - 2023/6

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85150264018

U2 - 10.1016/j.scriptamat.2023.115428

DO - 10.1016/j.scriptamat.2023.115428

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VL - 230.2023

JO - Scripta materialia

JF - Scripta materialia

IS - June

M1 - 115428

ER -

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

Abstract

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UN SDGs

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