Abstract
After investigation of the effect of hot-working and alloying elements on the mechanical properties of 0.3%C-0.5%Mn base steels, the following results were obtained.
(1) The hardness decreased and the value of elongation increased by hot-working for allmost evely steels.
(2) The hardness depended upon volume fraction of ferrite, which is mainly influenced by austenite grain size and recrystallization ratio after hot-working.
(3) The effect of alloying elements on recrystallization during hot-working was clarified.
