索氏体

Quenching and tempering treatment to be tempered sorbite organization, and its mechanical properties than those of equal hardness and normalizing sorbite organizations as excellent.

调质处理后得到回火索氏体组织，它的机械性能均比相同硬度的正火索氏体组织为优。

When the finishing temperature is 950℃ and the cooling rate is 4℃/s, the interlamellar spacings of pearlite is a bout 97 nm and the percentage of sorbite is 95.7%. At this time, the structure is the best.

高碳钢SWRH77B在终轧温度为950℃、冷却速度约为4℃/s时，其珠光体的片层间距约为97nm，索氏体含量达到95.7%左右，表明此时的组织为最佳索氏体组织。

The results show that microstructure of rolled steel is bainite + sorbite + some nubby ferrite, and the hardness is 32 HRC.

结果表明，该钢在轧制状态能获得贝氏体+索氏体+少量块状铁素体组织，硬度达32HRC。

In order to improve anti-fatigue property of wire rope, poval solution sorbitized treatment by water quenching replacing by lead quenching has been studied in laboratory, and a heat treatment process to obtain fine and homogeneous sorbite and possess high micro-hardness has been found.

为了进一步提高钢丝绳的抗疲劳性能，本文还进行了用聚乙稀醇水溶液水浴淬火索氏体化处理替代铅浴处理的实验室研究，找到了一种能使钢丝得到细而均匀的索氏体组织和具有较高显微硬度值的热处理工艺。

The characteristic of the new process is heating under Acl temperature for suitable time to change lamellar Sorbite to ginger-like Sobite.

工具钢在稍低于Acl温度下不太长时间保温，可使珠光体片不完全球化，形成姜块状索氏体，淬火后得到马氏体＋姜块状碳化物组织。

The quench zone consisted of martensite ,retained sorbite, temper troosite and so on.

激光作用区主要是低碳板条马氏体与未转变的索氏体甚至屈氏体、回火索氏体组织和屈氏体。

The fragment fell from the roll is the hardening layer, and the micrograph of its surface, its middle area and its bottom are martensite, sorbite, and troostite respectively.

剥离块为辊身的硬化层，硬化层外表为马氏体，中部为索氏体，硬化层的底部组织为屈氏体。

The results show that: with the increase of tempered temperature, the quenched martensite transforms into the tempered martensite, tempered martensite + tempered sorbite and tempered sorbite; the strength of samples decreases continuously but yield ratio increases a little.

结果显示：随回火温度的升高，其组织由淬火马氏体逐渐转化为回火马氏体、回火马氏体+回火索氏体及回火索氏体；试样的强度连续下降，屈强比略有上升。

The results show that the fractography is woody structure, there is a great deal ferric oxide in the hair seam, its matrix is composed by the ferrite, the pearlite and a little of sorbite and troostite, the grain size is 9～10 levels primarily, there are obvious zone structure and inclusions, which are silicate, sulfide and a little of oxide.

结果表明：弯裂带钢的断口呈木纹状，发纹处存在大量氧化铁，其基体主要由铁素体和珠光体组成，有少量索氏体及屈氏体，晶粒度以9～10级为主，有较为明显的带状组织，夹杂物为硅酸盐、硫化物及少量氧化物。

Through a series of quenching, tempering, tensile testing, low-temperature impact test and metallographic analysis, we ultimately came to the following conclusions:(1) low-carbon alloyed steel 20CrMn2NiMoV quenching at 870℃ and tempering at 200℃, whose structure contains tempered dislocation lath martensite and few small bainite under mixed, has the best obdurability;(2) Carbon Steel 45CrMn2NiMoV quenching at 850℃ and tempering at 620℃, whose structure is sorbitic, has a performance less than that of low-carbon Alloyed steel, but it can also meet the basic design requirements.(3) Mn can substitute for the role of Ni within limited extent.

通过一系列淬火、回火、拉伸试验、低温冲击试验以及金相分析，最终得出以下主要结论：（1）低碳合金钢20CrMn2NiMoV经870℃淬火+200℃回火，得到回火位错型板条马氏体+少量细小下贝氏体的混合组织，具有最佳的强韧性配合；（2）中碳合金钢45CrMn2NiMoV经850℃淬火+620℃回火，得到回火索氏体组织，综合性能虽然不及低碳合金钢，但也能基本满足设计要求；（3）Mn在一定程度上能够替代Ni的作用，适量的Mn和Ni相互配合可以得到最佳的低温韧性，因此&以Mn代Ni&是低温钢材料研究开发中一条可行的适合我国资源状况的合金化思路。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。