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Table 1 - Chemical composition of 3004 alloys used in the present workAlloy IDElements (wt. %)MnMgFeSiAl1F1.281.16

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(1)

Table 1 - Chemical composition of 3004 alloys used in the present work

Alloy ID Elements (wt. %)

Mn Mg Fe Si Al

1F 1.28 1.16 0.10 0.25 Bal.

3F 1.26 1.16 0.31 0.26 Bal.

6F 1.24 1.18 0.58 0.25 Bal.

(2)

Table 2 - SEM-EDS results for the intermetallics shown in Figure 1

Alloy ID Intermetallic Elements (wt. %)

Mn Fe Si Mg Al

1F A 12.85 6.76 6.77 0 70.62

B 0 0 13.31 19.29 67.4

3F C 11.74 10.34 0 0 77.92

D 0 0 18.01 21.81 60.18

6F E 11.44 13.22 0 0 75.34

F 0 0 24.67 27.64 47.68

(3)

Table 3 - Evolution of intermetallic volume fraction in experimental alloys

Alloy ID Dominant intermetallic

Volume fraction (vol. %)

Dominant Mg

2

Si

As-cast 375°C /48h As-cast 375°C /48h

1F α-

Al(MnFe)Si

1.05 ±

0.32 1.25 ± 0.26 0.22 ±

0.11 0.21± 0.06 3F Al

6

(MnFe) 2.18 ±

0.41 2.51 ± 0.34 0.23 ±

0.05 0.21 ± 0.08 6F Al

6

(MnFe) 3.82 ±

0.65 4.21 ± 0.53 0.31 ±

0.08 0.27 ± 0.12

(4)

Table 4 Estimated concentration of Mn in solid solution (C

Mn

) at as-cast and 648K (375°C)/48h conditions

Alloy ID Concentration (wt. %)

As-cast 375 °C/48h ΔC

1F 1.21 0.78 0.43

3F 1.17 0.65 0.52

6F 1.07 0.59 0.48

(5)

Table 5 - Characterisitic of dispersoids in experimental alloys after 648K (375°C)/48h

Alloy ID

Dispersoids Particle free zone

(PFZ) Average

equivalent

diameter, nm Volume fraction, Vol.% Volume fraction, %

1F 74 ± 22 2.55 ± 0.72 25.6 ± 2.3

3F 52 ± 15 3.14 ± 0.58 19.7 ± 1.9

6F 61 ± 14 2.89 ± 0.65 30.1 ± 2.5

Figure

Table 1 - Chemical composition of 3004 alloys used in the present work Alloy ID Elements (wt
Table 2 - SEM-EDS results for the intermetallics shown in Figure 1
Table 3 - Evolution of intermetallic volume fraction in experimental alloys
Table 4 Estimated concentration of Mn in solid solution (C Mn ) at as-cast and 648K (375°C)/48h conditions
+2

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