X ~ WATER QUENCH 
® — WOOD METAL QUENCH 
® - COPPER PLATE 
Ge 
1,1- - 
Z 10 = 
2 | 5 
Oo w 
3081 - 
08 % 100- 
Q — 
zo 2 90- 
ov 07 w 
2 3 
5 06 < 80- 
< 05 C7: 
3 < 
w 04 + 60- 
= + 
- 03 2 50- 
} 0.2 uw 40- 
o 
011 e 30- 
1 20- 
0 
—— zz UNDERCOOLING (°C) ! 
Fig. 2 —- Variation of lamellar eutectic spacing versus super- 
cooling. 
X - WATER QUENCH 
® —- WOOD METAL QUENCH DISC 
A-SPLAT COOLING A. M 
® ~COPPER PLATE 
7 ® ALUMINIUM DISK Supe. 
3 m than 
3 10 
3 repo: 
u 1 allo 
x 8 stig: 
r iq elec: 
& “A of si 
£ 
i 1. ct 
oF % } 2. fi 
vo 
| ——— The « 
27 » hete: 
too —p—— 
y= . —— of s 
0 50 100 \ 
——> UNDERCOOLING (°C) The : 
Fig. 3 - Variation of average Ni rich phase particle size within 
the "Irregular" eutectic versus supercooling. does 
highe 
Li i 
100 200 
322