. 2012 Jan 25;512(1-2):252–263. doi: 10.1016/j.jallcom.2011.09.076

Table 2.

Overview about selected three- and two-phase fields at 500 and 700 °C determined in the present study.

Phase field	Temperature	Nominal composition of the respective sample	Phase composition
			Phase	Al	Cu	Si
{(Al) + θ + (Si)}	500	Al₅₀Cu₁₀Si₄₀	(Al)	96.0(10)	3.0(10)	1.0(10)
			θ	68.0(10)	31.0(10)	1.0(10)
			(Si)	0^a	0^a	100^a
{η₂ + (Si) + θ}	500	Al₃₅Cu₂₅Si₄₀	η₂	49.7(2)	50.2(1)	0.1(1)
			(Si)	0^a	0^a	100^a
			θ	66.6(3)	32.4(3)	1.0(1)
{η₂ + (Si)}	500	Al₄₂Cu₄₈Si₁₀	η₂	46.8(2)	53.2(2)	0.1(1)
{η₂ + (Si)}	500	Al₄₂Cu₄₈Si₁₀	(Si)	0^a	0^a	100^a
{δ + (Si) + ζ₁}	500	Al₃₇Cu₅₃Si₁₀	δ	41.0(10)	59.0(10)	0.0(10)
			(Si)	0^a	0^a	100^a
			ζ₁	42.0(10)	58.0(10)	0.0(10)
{(Si) + ζ₁}	500	Al₂₅Cu₃₅Si₄₀	(Si)	0^a	0^a	100^a
{(Si) + ζ₁}	500	Al₂₅Cu₃₅Si₄₀	ζ₁	42.6(2)	57.3(2)	0.1(1)
{δ + (Si)}	500	Al₁₀Cu₅₅Si₁₀	δ	39.7(2)	0.1(1)	60.2(1)
{δ + (Si)}	500	Al₁₀Cu₅₅Si₁₀	(Si)	0^a	0^a	100^a
{γ₁ + (Si)}	500	Al₂₀Cu₄₀Si₄₀	γ₁	33.4(2)	0.6(2)	65.4(2)
{γ₁ + (Si)}	500	Al₂₀Cu₄₀Si₄₀	(Si)	0^a	0^a	100^a
{η′ + γ₁ + (Si)}	500	Al₁₀Cu₅₀Si₄₀	η′	3.0(10)	76.0(10)	21.0(10)
			γ₁	25.0(10)	69.0(10)	6.0(10)
			(Si)	0^a	0^a	100^a
{ɛ + κ}	500	Al₁₀Cu₈₀Si₁₀	ɛ	1.3(1)	78.5(1)	20.2(1)
{ɛ + κ}	500	Al₁₀Cu₈₀Si₁₀	κ	11.4(2)	80.2(2)	8.3(1)
{ɛ + γ₁ + κ}	500	Al₆Cu₇₈Si₁₆	ɛ	2.0(10)	78.0(10)	20.0(10)
			γ₁	16.4(1)	73.6(1)	10.0(1)
			κ	14.1(1)	77.8(1)	8.1(1)
{γ₁ + κ}	500	Al₂₅Cu_72.5Si_2.5	γ₁	28.6(2)	69.1(1)	2.3(1)
		Al₂₅Cu_72.5Si_2.5	κ	17.2(1)	78.6(2)	4.2(1)
		Al₁₇Cu₇₅Si₈	γ₁	18.7(2)	72.8(2)	8.5(1)
		Al₁₇Cu₇₅Si₈	κ	14.6(1)	77.7(1)	7.7(1)
{(Cu) + γ}	500	Al₂Cu₈₆Si₁₂	(Cu)	3.3(2)	87.6(3)	9.1(3)
{(Cu) + γ}	500	Al₂Cu₈₆Si₁₂	γ	0.6(1)	82.9(1)	16.5(2)
{γ + κ}	500	Al₃Cu₈₂Si₁₅	γ	2.3(1)	81.1(1)	16.6(1)
{γ + κ}	500	Al₃Cu₈₂Si₁₅	κ	8.5(1)	82.5(1)	9.0(1)
{ɛ₂ + γ₁ + (Si)}	700	Al₃₈Cu₆₀Si₂	ɛ₂	39.6(3)	60.2(3)	0.2(1)
			γ₁	38.3(3)	61.5(2)	0.2(1)
			(Si)	0^a	0^a	100^a
{γ₁ + (Si)}	700	Al₃₀Cu₆₀Si₁₀	γ₁	33.2(3)	65.9(2)	0.9(2)
		Al₃₀Cu₆₀Si₁₀	(Si)	0^a	0^a	100^a
		Al₂₅Cu₆₀Si₁₅	γ₁	28.1(3)	68.2(2)	3.7(1)
		Al₂₅Cu₆₀Si₁₅	(Si)	0^a	0^a	100^a
{η + γ₁ + (Si)}	700	Al₁₀Cu₆₀Si₃₀	η	1.8(1)	76.4(1)	21.8(2)
			γ₁	19.5(2)	71.2(1)	9.2(2)
			(Si)	0^a	0^a	100^a
{η + γ₁}	700	Al₁₀Cu₇₅Si₁₅	η	2.5(1)	76.7(1)	20.8(1)
{η + γ₁}	700	Al₁₀Cu₇₅Si₁₅	γ₁	16.0(10)	74.0(10)	10.0(10)
{ɛ + τ}	700	Al₅Cu₇₇Si₁₈	ɛ	2.9(1)	76.9(1)	20.2(1)
		Al₅Cu₇₇Si₁₈	τ	9.1(3)	77.2(1)	13.7(2)
		Al₄Cu₇₈Si₁₈	ɛ	2.3(1)	77.2(1)	20.5(2)
		Al₄Cu₇₈Si₁₈	τ	6.0(2)	78.8(1)	15.2(2)
{γ + κ}	700	Al₃Cu₈₂Si₁₅	γ	2.6(1)	80.9(3)	16.5(3)
		Al₃Cu₈₂Si₁₅	κ	3.6(1)	83.7(2)	12.7(1)
		Al₅Cu₈₀Si₁₅	γ	4.9(1)	79.7(2)	15.4(1)
		Al₅Cu₈₀Si₁₅	κ	6.1(1)	82.2(1)	11.7(1)
{κ + τ}	700	Al₇Cu₈₀Si₁₃	κ	7.7(1)	81.2(2)	11.1(1)
		Al₇Cu₈₀Si₁₃	τ	6.6(1)	79.0(1)	14.4(1)
		Al₁₂Cu₇₇Si₁₁	κ	13.0(1)	79.1(1)	7.9(2)
		Al₁₂Cu₇₇Si₁₁	τ	11.8(2)	76.5(1)	11.7(1)
{γ₁ + κ}	700	Al₂₀Cu₇₅Si₅	γ₁	22.1(2)	71.8(2)	6.1(1)
		Al₂₀Cu₇₅Si₅	κ	19.2(2)	76.6(3)	4.2(1)
		Al₂₆Cu₇₂Si₂	γ₁	23.3(1)	75.1(1)	1.6(1)
		Al₂₆Cu₇₂Si₂	κ	28.0(1)	69.9(2)	2.1(1)
{(Cu) + κ}	700	Al₁₈Cu₈₀Si₂	(Cu)	16.5(1)	81.8(2)	1.7(1)
		Al₁₈Cu₈₀Si₂	κ	20.1(1)	77.7(1)	2.2(2)
		Al₅Cu₈₆Si₉	(Cu)	5.4(2)	86.3(3)	8.3(2)
		Al₅Cu₈₆Si₉	κ	4.8(2)	85.4(2)	9.8(2)

No considerable solubility of Al or Cu in Si.