Essential Magnesium Alloys Binary Phase Diagrams and Their Thermochemical Data

Table 32

Optimized model parameters for the Mg-Sn system [22].

Phase	Parameters; Δ𝑔^0 and ^0𝐿 in J/mole, ^oΔ𝐻 in J/mole·atom and ^oΔ𝑆 in J/mole·atom·K
Liquid	Z^MgMgSn=3, Z^SnSnMg=6; Δ𝑔^0MgSn=−17819.7−4.10𝑇; Δ𝑔^10MgSn= 1 171.5; Δ𝑔^01MgSn=−4184.0−2.09𝑇
Mg-hcp	^0𝐿^Mg-hcp= −62 000; [^∘𝐺^Sn-hcp=^∘𝐺^Sn-bct+5000]
Cu-fcc	^0𝐿^Sn-bct= −20 000; [^∘𝐺^Mg-bct=^∘𝐺^Mg-hcp+8360]
Mg2Sn	^oΔ𝐻^SnMg2Sn,Mg=−28332.9; ^oΔ𝑆^SnMg2Sn,Mg=−1.59