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COST 507 - Repositório Aberto da Universidade do Porto

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Table 2. A comparison between calculated and experimental positions of the invariant<br />

points on the liquidus surface.<br />

Reaction<br />

A) Liq+AI 13Fe 4=fcc+a<br />

Β) Uq+ß=fcc+oc<br />

C) Liq=ß+fcc+Si_F4<br />

D) Liq+6=ß+Si_F4<br />

E) Liq+AI 13Fe 4+7=a<br />

F) Liq+Y+a=ß<br />

G) Liq+y=6+ß<br />

H) Liq+AI 5Fe 4=bcc+AI 2Fe<br />

I) Liq+AI 2Fe=AI 5Fe 2+bcc<br />

J) L+AI 5Fe 2=AI, 3Fe 4+<br />

τ 1<br />

K) Liq+x_l=AI 13Fe 4+T_3<br />

Temperature<br />

°C<br />

632<br />

620<br />

629<br />

629<br />

630<br />

632<br />

621<br />

615<br />

612<br />

611<br />

613<br />

578<br />

577<br />

577<br />

576<br />

578<br />

573<br />

608<br />

595<br />

600<br />

596<br />

597<br />

600<br />

749<br />

ca. 710<br />

855<br />

710<br />

855<br />

715<br />

675<br />

703<br />

700<br />

700<br />

700<br />

1125<br />

1120<br />

1067<br />

1041<br />

1020<br />

1020<br />

975<br />

wt%Fe<br />

1.9<br />

2.0<br />

2,5<br />

2.0<br />

2.0<br />

1,6<br />

2,0<br />

1,7<br />

1.5<br />

1,8<br />

0,57<br />

0,7<br />

0,75<br />

0,5<br />

1,08<br />

1,0<br />

1,5<br />

0.95<br />

7,6<br />

25.0<br />

7,5<br />

25,0<br />

5.6<br />

6,0<br />

4.8<br />

7.0<br />

8.0<br />

53.3<br />

51,0<br />

52,0<br />

48,2<br />

48,0<br />

41.2<br />

Liquid<br />

wt%Si<br />

3.8<br />

3,0<br />

4,0<br />

4,0<br />

4,2<br />

5,8<br />

5.0<br />

6,5<br />

7,5<br />

6,3<br />

12,6<br />

11,6<br />

12.0<br />

11,6<br />

14,3<br />

14,6<br />

14,0<br />

14,0<br />

13,5<br />

12,0<br />

17,0<br />

12,5<br />

17,0<br />

12.2<br />

13,0<br />

14.3<br />

14.0<br />

­14,0<br />

3,0<br />

3.0<br />

7,6<br />

10.5<br />

14,0<br />

17,4<br />

wt%Fe<br />

39,1<br />

0,0037<br />

32,6<br />

36.0<br />

0.05<br />

33,0<br />

0,052<br />

39,2<br />

0.05<br />

38,1<br />

0,026<br />

32,6<br />

0,04<br />

33,0<br />

0,04<br />

0,04<br />

38,1<br />

4.6­10­ 3<br />

0,01<br />

0,01<br />

0,01<br />

39,3<br />

32,6<br />

36,0<br />

33,0<br />

39,2<br />

32,5<br />

34,0<br />

62,8<br />

58,0<br />

62,5<br />

40.3<br />

39,2<br />

39,8<br />

Solid phases<br />

wt%Si<br />

0.27<br />

0.45<br />

6,2<br />

0.1<br />

0.6<br />

7.0<br />

0,64<br />

0.8<br />

0,64<br />

15,9<br />

0,7<br />

7,2<br />

1.1<br />

7,0<br />

1,0<br />

1.0<br />

15,9<br />

1,8<br />

1,6<br />

1,65<br />

1,7<br />

1,6<br />

7,9<br />

0,2<br />

7,0<br />

0.8<br />

8.3<br />

7,0<br />

1,8<br />

14,0<br />

5,3<br />

2,1<br />

0,8<br />

4,1<br />

phase<br />

Al 13<br />

(ce<br />

α<br />

Al,3<br />

(ce<br />

α<br />

Ice<br />

Alia<br />

fee<br />

α<br />

(cc<br />

α<br />

fee<br />

α<br />

fee<br />

fee<br />

α<br />

Ice<br />

fee<br />

fee<br />

fee<br />

Al, 3<br />

α<br />

Al,3<br />

α<br />

Al«<br />

α<br />

α<br />

bec<br />

bec<br />

bec<br />

Alis<br />

Al«<br />

Al,3<br />

Cale<br />

Ref<br />

81 Riv<br />

76Mon<br />

55Arm<br />

59Phi<br />

92Gho<br />

Cale<br />

81 Riv<br />

76Mon<br />

59Phi<br />

92Gho<br />

Cale<br />

55Arm<br />

81 Riv<br />

76Mon<br />

59Phi<br />

92Gho<br />

Cale<br />

55Arm<br />

81 Riv<br />

76Mon<br />

59Phi<br />

92Gho<br />

Cale<br />

55Arm<br />

81 Riv<br />

Mon<br />

92Gho<br />

Cale<br />

76Mon<br />

Cale<br />

55Arm<br />

76Mon<br />

81 Riv 1<br />

Cale<br />

81 Riv 2<br />

92Gho<br />

Cale<br />

Cale<br />

81 Riv<br />

92Gho<br />

Cale<br />

1 For lhe reaction Liq+δ = α + β<br />

2 For lhe reaclion Liq+AI^Fc 4 =bcc+Al5Fc2<br />

­ 170

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