Table 1. Parameter sets for Al–Si, Si–Hf and Al–Hf systems.

System	Regular solution parameter, J/mol
Al–Si [22]	${\mathit{\Omega }}_{\text{Al - Si}}^0=-10695.4-1.823T$
	${\mathit{\Omega }}_{\text{Al - Si}}^1=-4274.5+3.044T$
	${\mathit{\Omega }}_{\text{Al - Si}}^2=670.7-0.46T$
Si–Hf [20]	${\mathit{\Omega }}_{\text{Si - Hf}}^0=-177631+6.42546T$
	${\mathit{\Omega }}_{\text{Si - Hf}}^1=-1830$
Al–Hf [23]	${\mathit{\Omega }}_{\text{Al - Hf}}^0=-182442+22.138T$
	${\mathit{\Omega }}_{\text{Al - Hf}}^1=-21934+20.534T$
	${\mathit{\Omega }}_{\text{Al - Hf}}^2=54575$