The C-RE segregation lowers the transformation temperature of pearlite, which lessens the thickness of lamellas and lamellar spacing of pearlite and induces the granularpearlite.
RE偏聚使珠光体转变的开始温度降低，从而减小珠光体的片层厚度及层间距，并导致粒状珠光体的形成。
2
Both hardness and impact toughness of the granularpearlite are better than that of lamellar pearlite, but the latter has a better wear resistance.
粒状珠光体的硬度和冲击韧性均优于层片状珠光体，但耐磨性逊于后者。
3
The lamellar cementite in the pearlite broke up and a large number of granular cementite precipitate on the ferrite boundaries.