Alloying Elements of Magnesium Alloys: A Literature Review

Abstract

Magnesium alloys are the lightest structural metal. The lightness is the main reason for the interest for Mg in various industrial and clinical applications, in which lightweight structures are in high demand. Recent research and developments on magnesium Mg alloys are reviewed. A particular attention is focused on binary and ternary Mg alloys consisting mainly of Al, Zn, Mn, Ca and rare earth (RE) elements. The effects of different alloying elements on the microstructure, the mechanical and the corrosion properties of Mg alloys are described. Alloying induces modifications of the microstructural characteristics leading to strengthening mechanisms, improving then the ductility and the mechanical properties of pure Mg.

Processing of different Mg-based multiphase alloys via a combined severe plastic deformation

“…39 Similarly, the trend of increased strength and decreased elongation to failure in the Mg–1Mn alloy is reported in other research, attributed to grain refinement, second phase particles and texture effects. 43…”

“…39 Similarly, the trend of increased strength and decreased elongation to failure in the Mg-1Mn alloy is reported in other research, attributed to grain refinement, second phase particles and texture effects. 43 The secondary and backscattered SEM images of the fracture surfaces of Mg-X (HA, Mn, Si, Zr, Zn) alloys after the CECAP-FE process are illustrated in Figure 5. Magnesium alloys typically exhibit brittle fracture, characterised by cleavage or quasi-cleavage.…”

Recent research advances on corrosion mechanism and protection, and novel coating materials of magnesium alloys: a review

“…With the application of rapid solidification technique, the difference in radius between atoms can be increased to 30%, alloying of more elements becomes available. 190 The atomic radius of Mg is 0.160 nm. Among the metal elements, K, Rb, Cs, Sc, Ba, etc.…”

Recent Advancements in Materials and Coatings for Biomedical Implants

“…This leads to the reduction in stress shielding at the bone/implant interface. Their mechanical and corrosion properties can be enhanced by alloying with Al, Zn, and other elements [110,111]. Current research is focused on the development of Mg-based alloys with zero or low cytotoxicity.…”