粒状珠光体是由铁素体和粒状碳化物组成.它由过共析钢经球化退火或马氏体在650℃~A1温度范围内回火形成。其特征是碳化物成颗粒状分布在铁素体上。
... 离子 ion 粒状珠光体 granular pearlite 连续转变曲线continuous cooling transformation(CCT) curve ...
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... cast iron 球墨铸铁 spheroidal pearlite 粒状珠光体 spheroidizing 球化处理 ...
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粒状珠光体羽 obular pearlite
In range of 860-950℃ normalizing, ideal spheroidal pearlite can be achieved after normalizing.
在860～950℃之间正火，可以得到理想的粒状珠光体组织。
参考来源 - 球墨铸钢机理及应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
一般地，片状珠光体的强度高于粒状珠光体、塑性低于球状珠光体。
In general, the strength of carbon steel containing lamellar pearlite is higher than that of carbon steel containing nodular pearlite, but the ductility of the former is lower than that of latter.
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。
Both hardness and impact toughness of the granular pearlite are better than that of lamellar pearlite, but the latter has a better wear resistance.
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。
The C-RE segregation lowers the transformation temperature of pearlite, which lessens the thickness of lamellas and lamellar spacing of pearlite and induces the granular pearlite.
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