Abs t rac t -The exchange reactions of Na, Ca and Mg on montmorillonite are revisited employing recently developed analytical and theoretical approaches. The fractional adsorption of the cations has been determined by displacing them from the adsorbed state in one step, using a low concentration of an organic cation of large binding affinity. The analysis of displaced and solution cations emplo...

Twinning is a critical deformation mode in Mg alloys. Understanding twinning (DT) essential to improving mechanical properties of To address the experimentally observed conspicuous hardening effects Mg-1.8Zn-0.2Ca alloys, interactions between {10–12} twin boundaries (TBs) and solute clusters Mg-Zn-Ca alloys were examined via molecular dynamics (MD) simulations. We find that Zn/Ca-containing sho...

Herein, the effects of Ca content on microstructure, texture and mechanical properties extruded Mg–3Al–0.4Mn–xCa (x = 0.4, 0.8 1.2 wt%) rods are systematically investigated. The results reveal that alloy, with wt%, exhibits highest strength ductility, possessing an ultimate tensile 267.57 MPa elongation (EL) 16%. This is mainly due to gradual transformation typical fiber into a [10-11] componen...