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).
|Publication status||Published - 2022 Oct 1|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) (Grant number: NRF-2021M3H4A1A0409200112 , 2021M3H4A6A01045764 , and 2020M3H4A3106736 ).
© 2022 Elsevier B.V.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering