Common Phases for Magnesium Alloys
TCMG8 Models for the Included Phases
The following lists common phase names and the corresponding Thermo‑Calc database phase names for some key magnesium alloys.
| Name in the Database | Common Name and Description |
|---|---|
| LIQUID | liquid phase, which covers the melt of Mg alloys |
| HCP_A3 | HCP_A3 type solid solution phase, which covers the (Mg) matrix phase |
| GDMG5 | GdMg5-based Mg-rich phase, dissolving other elements, especially rare earth elements |
| MG24R5 | Mg-rich phase, including Mg24Y5, Mg24Ho5, Mg24Dy5 and Mg24Er5 |
| AL12MG17_A12 | Al-Mg compound that forms in Mg-Al based alloys |
| AL13CEMG6 | Laves_C36-type ternary phase in Al-Ce-Mg |
| ALCUMG_Q | Al-Cu-Mg ternary compound |
| ALLIMG_T | Al-Li-Mg ternary compound |
| LPSO_14H | Long-period stacking-ordered (LPSO) structure, type 14H |
| LPSO_18R | Long-period stacking-ordered (LPSO) structure, type 18R |
| I_MGRZN | Icosahedral quasi-crystalline phase in Gd/Y-Mg-Zn system |
| Z_MGRZN | hexagonal Z phase in Gd-Mg-Zn. Also known as the S-phase, hP92 |
| M_MGRZN | hexagonal M phase in Gd-Mg-Zn, hP238, related to the S/Z- and L-phase |
| L_MGRZN | hexagonal L phase in Gd-Mg-Zn, hP480, related to the S/Z- and M-phase |
| F_MGGDZN | Gd20Mg19Zn81 and Ce20Mg19Zn81. Also known as the F-phase |
| L21_RMGZN2 | Heusler phase in Mg-alloys, including CeMgZn2, GdMgZn2 and MgZn2Y. Also known as the W-phase. Related to MG3R_D03 |
| C15_LAVES | Laves_C15 phase, which covers some Mg-compounds, Al2Ca, Al2Ce, Cu2Mg, Fe2Gd and Mg2Gd etc. |
| C36_LAVES | Laves_C36 phase, which covers MgNi2, (Cu,Zn)2Mg and (Al,Mg)2Ca |
| C14_LAVES | Laves_C14 phase, which covers some Mg-compounds, Al2Zr, CaLi2, CaMg2, Mg2Sr, Mg2Y, MgZn2, Mn2Zr and Na2K etc. |
| MG17SR2 | Mg17Sr2 and Ce2Mg17, also Ce2Fe17, Gd2Fe17, Gd2Ni17, La2Mg17, La2Zn17, Pr2Zn17, Th2Zn17 and Y2Zn17 |
| MG3R_D03 | stable or metastable phase in Mg-RE (rare earth) alloys, Mg3Ce, Mg3Gd, Mg3Nd, Mg3Pr, Mg3La and Mg3Sm |
| AL11R3 | Al11Ce3, Al11La3_L, Al11Nd3_L, Al11Pr3_L, Zn11Pr3 and Zn11Y3 |
| MG12R | Mg-rich phase, may form in Mg12Ce, Mg12La, Mg12Pr, also Zn12Y, Mn12Gd and Mn12Y and more systems |
| MG41R5 | Mg-rich phase, may form in Mg41La5, Mg41Ce5, Mg41Nd5, Mg41Pr5 and Mg41Sm5 and more systems |
| MG2SI_C1 | Mg2Si, also Si2Ni, Mg2Sn |
| MG7RE | metastable precipitate in Mg-RE(rare earth), including Mg7Gd, Mg7Y and Mg7Nd, as well as dissolving Zn |
| MG3R_D019 | metastable precipitate in Mg-RE(rare earth), including Mg3Gd, Mg3Y and Mg3Nd, as well as dissolving Zn |
| MG2NIH4 | High-pressure phase in the Mg-Ni-H system, important to hydrogen storage |
| MGH2_C4 | MgH2, important to hydrogen storage |