粒状珠光体

CRE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 .

粒状珠光体形成对屈氏体分级机叶片耐磨性的影响

Effect of Formation of Granular Pearlite on Wear Resistance of Troostite Classifier Blade

获得粒状珠光体可锻铸件的热处理工艺

The Process of Heat Treatment for Particle Pearlite Malleable Cast Iron

锻造、正火后，基体组织为粒状珠光体。在860～950℃之间正火，可以得到理想的粒状珠光体组织。

In range of 860-950 ℃ normalizing , ideal spheroidal pearlite can be achieved after normalizing .

另外本文在研究过程中，发现在锻造和正火条件下得到了粒状珠光体，这在球墨铸钢领域里是未见报道的。

During the study , spheroidal pearlite of spheroidal-graphit cast steel has been achieved after hot-forging or normalizing first .

热处理：通过退火，基体组织为粒状珠光体，强度、硬度下降，韧性大幅度上升；

Heat treatment : Through annealing , spheroidal pearlite can be achieved , and toughness rises , and on the other hand strength decreases .

热丝焊接的堆焊层组织则由垂直于熔合线的柱状铁素体、块状铁素体、粒状珠光体、少量贝氏体等组织构成。

The microstructure of cladding layer by hot-wire welding composed by cylindrical ferrite which was perpendicular to the fusion line , massive ferrite , granular pearlite and a small amount of bainite .

热加工时，位错密度大大增加，使碳出现偏聚，增加了奥氏体不均匀的程度，促进粒状珠光体的形成。

At last , the density of dislocation of the material increases greatly after hot forging , then segregation of carbon occurs , which also result in non-uniformly austenite and then spheroidal pearlite .

此粒状珠光体由两部分构成：一部分来自块状铁素体或奥氏体中直接析出的粒状的不连续渗碳体；一部分来自等温过程中片层状渗碳体的不断熔断。

The granular pearlite consists of two parts : one part is from the discontinuous granular cementite which precipitated directly from ferrite matrix ; another part is from the " fusing break " of the lamellar cementite during isothermal treatment .