Microstructure changes of eutectoid pearlitic steel during cold rolling
SUN Shuhua; XIONG Yi; FU Wantang; XING Guangzhong; FURUHARA Tadashi; MAKI Tadashi
College of Materials Science and Engineering; Yanshan University; Qinhuangdao 066004
Cite this article:
SUN Shuhua; XIONG Yi; FU Wantang; XING Guangzhong; FURUHARA Tadashi; MAKI Tadashi. Microstructure changes of eutectoid pearlitic steel during cold rolling. Acta Metall Sin, 2005, 41(3): 267-270 .
Abstract The microstructure changes of pearlitic eutectoid steel induced by cold
rolling were investigated by using SEM, TEM and XRD etc. According to the
morphological characteristics of cementite lamellae, the
deformed pearlite can be
divided into three kinds: irregularly bent lamella (pearlite
lamella originally inclined with
large angles to the rolling plane and irregularly bent after
deformation); coarse lamellae with
shear-band (the rhomboidal blocks of weakly deformed lamella
bounded by shear band) and
fine lamella (heavily deformed lamella aligned parallel to the
rolling direction with fine
interlamellar spacing). As the rolling reduction increases,
the proportion of fine lamella
increases. Heavy cold rolling also induced the
severe plastic deformation and dissolution of cementite.
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