Enhancement of creep resistance of pure magnesium by magnesiothermic reaction with TiO2 nanoparticles

H. Kang; K. M. Choi; D. H. Bae

doi:10.1016/j.matlet.2022.132583

Enhancement of creep resistance of pure magnesium by magnesiothermic reaction with TiO₂ nanoparticles

H. Kang, K. M. Choi, D. H. Bae

Department of Materials Science and Engineering

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

Abstract

The creep resistance of magnesium used in powertrain components of automotive is one of the most considerable mechanical properties. The metallic oxide particles using a magnesiothermic reaction in the Mg matrix can effectively improve the creep resistance. The MgO nanoparticles produced by oxygen atoms decomposed from embedded TiO₂ nanoparticles in the Mg matrix effect on the creep resistance is investigated. The magnesium revealed a stress exponent close to 1, which indicates that the dominant creep may occur via lattice diffusion, as well as the nanoparticles formed at the grain boundaries during creep deformation suppress Coble creep even when relatively high stresses (30–70 MPa) are applied at low temperatures (70–150 °C).

Original language	English
Article number	132583
Journal	Materials Letters
Volume	324
DOIs	https://doi.org/10.1016/j.matlet.2022.132583
Publication status	Published - 2022 Oct 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) (Grant number: NRF-2021M3H4A1A0409200112 , 2021M3H4A6A01045764 , and 2020M3H4A3106736 ).

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2022.132583

Cite this

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title = "Enhancement of creep resistance of pure magnesium by magnesiothermic reaction with TiO2 nanoparticles",

abstract = "The creep resistance of magnesium used in powertrain components of automotive is one of the most considerable mechanical properties. The metallic oxide particles using a magnesiothermic reaction in the Mg matrix can effectively improve the creep resistance. The MgO nanoparticles produced by oxygen atoms decomposed from embedded TiO2 nanoparticles in the Mg matrix effect on the creep resistance is investigated. The magnesium revealed a stress exponent close to 1, which indicates that the dominant creep may occur via lattice diffusion, as well as the nanoparticles formed at the grain boundaries during creep deformation suppress Coble creep even when relatively high stresses (30–70 MPa) are applied at low temperatures (70–150 °C).",

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