This article investigates the limit of detectability of twinning deformation mechanism in Mg by non-invasive “acoustic emission” technique during plastic deformation under mechanical loading. Minimum twin size and its nucleation time detectable by acoustic emission are identified.
COBISS.SI-ID: 4683515
This article investigates the evolution of various structure characteristics and properties in a Mg-Zn-Ca-Zr alloy of direct relevance to this project during friction stir processing, which is a special deformation processing technique for microstructure control in thin sheet workpieces. The roles of intermetallic precipitates, texture and grain size in the control of mechanical properties in this novel alloy were identified.
COBISS.SI-ID: 4683771
A two-dimensional model to simulate the dendritic and eutectic growth in binary alloys is developed. The originality of the work is in the novel, adaptive approach to the efficient and accurate solution of the posed multiscale problem. Several examples of typical microstructures are simulated and the features of the method as well as further developments are discussed. The method is suitable for numerical simulation of dendritic growth in binary magnesium alloys.
COBISS.SI-ID: 15618075
The effect of alloying with rare-earth metals on the degradation of magnesium has been studied in three model alloys Mg– 0.8Nd, Mg–0.2Zr and Mg–2.0Gd using a combination of isothermal calorimetry and pressure measurements. The degradation of the Gd-containing alloy is approximately 100 times that of the other two alloys studied and is associated with the release of heat and hydrogen gas in large quantities.
COBISS.SI-ID: 5337851
We designed an advanced cell for immersion testing allowing simultaneous assessment of two complementary characteristics of Mg corrosion in aqueous environments: isothermal calorimetry and pressure monitoring. Isothermal calorimetry monitors in situ heat production rate during chemical reactions, which can be recalculated to corrosion rate if the enthalpy of a process is known. Pressure monitoring allows alternative quantification of corrosion rate through hydrogen production.
COBISS.SI-ID: 5337339