Open Access
Review
Table 1
Alloying elements on specific properties of Mg-based alloys.
| Alloy element | Casting, melting, mechanical and corrosion behaviour |
|---|---|
| Ag | Mechanical properties: improves high temperature tensile and creep resistance when alloyed with rare earth elements. Corrosion properties: detrimental to corrosion behaviour. |
| Al | Casting behaviour: increases casting behaviour and lead to microporosity. Mechanical behaviour: solid solution and precipitation hardening. Corrosion properties: minimum effect observed. |
| Ca | Casting behaviour: Excellent grain refining and suppress oxidation. Mechanical behaviour: improves creep resistance. Corrosion behaviour: poor corrosion resistance. |
| Li | Casting behaviour: increases evaporation and burning behaviour. Mechanical behaviour: Solid solution hardening effect, reduces density and increases ductility. Corrosion behaviour: decreases corrosion resistance. |
| Mn | Casting behaviour: precipitation of fine Fe-Mn precipitates. Mechanical behaviour: increases creep resistance. Corrosion behaviour; improves corrosion with Fe in the alloy. |
| Rare earth | Casting behaviour: improve castability and reduces microporosity. Mechanical behaviour: precipitation hardening and solid solution strengthening at both room and high temperatures improving tensile and creep properties. |
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