Steels_ Metallurgy and Applications, Third Edition

42 Steels: Metallurgy and Applications

2.2:

2.0

52

9 0.002 wt%C-0.032 wt%TI

O 0.002 wt%C-0.010 wt% Nb

i

O~~

1000 1100 12~ O

Slab reheating temperature (~

Figure 1.40 Effect of slab reheating temperature on the mechanical properties of
0.002 wt% C steel containing 0.01 wt% Nb or 0.032 wt% Ti (Satoh et al. 7~

2.0

1.8

,E 1.6

, , I , I

50 70 90

Cold reduction (%)

Figure 1.41 Effect of coM recuction on the rm values of titanium-stabilized steels for
batch and continuous type annealing cycles (Goodenow and Held 71)

2.4 - ,,,,

2 ID

to 2.0 >

1.6

~

e

.f

./

, I s i _ , _

700 800

Annealing temperature (~

900

Figure 1.42 Variation of rm value of 0.002 wt% carbon-niobium steel with annealing
temperature after annealing for 40 seconds (Satoh et al. 72)