High-Temperature Tensile Fractography of Zr-, Ni-, and Mn-Containing Al-Si-Cu-Mg Cast Alloys

Table 2

Tensile properties of the three used alloys tested at 250⁰C.

Alloy code	Condition	UTS (MPa)	SD	YS (MPa)	SD	%El	SD
M1S (354 + 0.3% Zr)	T6	217.3	6.76	213.7	6.49	1.9	0.25
	T6 + 100 h	95.8	1.22	76.8	0.50	12.1	0.48
	T6 + 200 h	91.6	4.30	78.3	1.44	11.0	0.49
M2S (M1S + 2% Ni)	T6	223.7	8.51	222.3	13.94	2.2	0.08
	T6 + 100 h	102.4	1.63	83.4	2.72	9.4	0.49
	T6 + 200 h	100.7	4.04	80.6	3.33	8.4	0.77
M3S (M1S + 0.75% Mn)	T6	248.7	9.79	245.6	11.07	1.5	0.09
	T6 + 100 h	104.8	5.29	84.3	4.10	12.0	0.83
	T6 + 200 h	101.8	1.45	81.4	1.21	13.5	0.63