Hot deformation behavior of a Cr-containing low carbon steel in the ferrite range

A low carbon steel with Cr addition of 0.46wt% combined with trace elements of Mn and Ti was studied.The apparent activation energy of deformation and the hot deformation equation of the steel in the ferritic range were determined by means of single hot compression tests.The hot-rolled strip of 3 mm in thickness rolled in the ferritic range was obtained using a laboratory hot rolling mill.The mechanical properties show that the values of yield strength and ultimate tensile strength are 230 and 330 MPa,respectively,and the elongation is 33%.The average r-value is 1.1.Large polygonal ferrite recrystallization grains with about 40 μm in size and the strong {111} recrystallization texture can be obtained in the hot-rolled strip.