Understating the factors influencing yield strength on Mg alloys
Galindo-Nava, Enrique I
Rivera-Dí, az-del-Castillo Pedro EJ
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Toda-Caraballo, I., Galindo-Nava, E. I., & Rivera-Dí, a. P. E. (2014). Understating the factors influencing yield strength on Mg alloys. Acta Materialia, 75 287-296. https://doi.org/10.1016/j.actamat.2014.04.064
Taking the Hall–Petch relationship as a starting point, the factors contributing towards Mg alloy strengthening are analysed, and their relative importance quantified. Solid-solution strengthening is modelled employing a power-law approach. The effects of various processing schedules are reviewed, showing that these play a relatively minor role. Grain refinement effects are described employing thermodynamic and kinetic formulations via the interdependence theory approach. The effects of rare earths are examined, showing that their major contribution is towards grain size control, an effect often in conflict with solid-solution strengthening. A computational approach is proposed, successfully modelling 104 grades reported in the literature. The approach may aid in tailoring and designing Mg alloys for yield strength.
Magnesium alloys, Yield strength, Grain refinement, Computational thermodynamics, Alloy design
The authors wish to acknowledge nancial support from the Accelerated Metallurgy Project, which is co-funded by the European Commission in the 7th Framework Programme (Contract NMP4-LA-2011-263206), by the European Space Agency and by the individual partner organisations.
External DOI: https://doi.org/10.1016/j.actamat.2014.04.064
This record's URL: https://www.repository.cam.ac.uk/handle/1810/245340