Steels_ Metallurgy and Applications, Third Edition

(singke) #1
48 Steels: Metallurgy and Applications

,~ oO
,.~ 20 o~

"~I0 C o o
C9
,, l , I i 9 ,
,-, r 0 o 700~
o. o='~-~ 9 850~
~^240

N o%
200
>..
48 4, I, , ....
0

g ,--n 4o

T9 , l ,=, h , I

1.8

> 1.4

1.0 +
-0.1 0 0.1 0.2
k value

Figure 1.48 Variation of yield stress, elongation, rm value and grain size with K value
for rimming steel subcritically and intercritically annealed (Toda et al. 85)


1.6 9

~ o.o4w, o+"
=
~ m

11
1.
0 0.2 0.4 0.6 0.8
Manganese content (wt%)

Figure 1.49 Variation of rm value with manganese content for steels with different carbon
contents heated at 50*C/s (Osawa et al. 86)