1989 Volume 75 Issue 6 Pages 948-955
The effect of the interaction between carbon and substitutional elements such as chromium, silicon and phosphorus on the deep drawability of cold-rolled steel sheets was studied.
Chromium drastically deteriorates the deep drawability with the coexistence of C. This effect is derived from the interaction between C and Cr: this attractive interaction tends to form Cr-C dipole and weakens the orientation selectivity of recrystallization nuclei by inhibiting the dislocation movement. The effect of Cr is similar to that of Mn.
Silicon and phosphorus keep similar effects on the deep drawability independent of the existence of C. This reflects the absense of attractive interaction between C and Si or P.
Phosphorus improves the deep drawability in steels containing both C and Mn in the case of annealing by slow heating. This fact is explained by the indirect effect of P that suppresses the interaction of C and Mn.