屈氏体

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

渗层中白色组织为溶解少量铁的铜固溶体，黑色组织为屈氏体。

The bright layer is copper solid solution with a small amount of ferrite , the black layer is troostite .

矿山用屈氏体高铬多元合金铸铁磨球

Troostite High Chromium Multi-Element Alloy Cast Iron Grinding Balls of Mine Use

金属型铸造铬屈氏体磨球

Cr - troostite Grinding Ball Formed in Metal Mould

屈氏体高铬铸铁球的生产工艺对磨球质量的影响

Effects of Production Process for High Chromium Cast Iron Balls on Grinding Ball Quality

过渡区由于屈氏体的析出，硬度明显下降。

And in its transition zone , the hardness is reduced owing to the troostite precipitated .

结果表明，活塞杆在磁粉探伤中显现的螺旋形磁粉堆积线是由热处理缺陷一屈氏体软带造成的。

The result proves that the accumulate line is caused by heat treatment defect , soft troostite tape .

生产铬钒钛屈氏体磨球要严格控制Cr/C比和元素Si。

The Cr / C ratio and Si must be controlled strictly to produce Cr-V-Ti troostite grinding ball .

对屈氏体高铬铸铁叶片进行力学性能测试、显微组织观察和断口形貌分析。

The mechanical properties testing , microstructure observation and fractographic features analysis of the troostite high chromium cast iron blade were carried out .

金相观察显示经过蠕变后组织的宏观形貌和分布状态没有发生改变，仍然呈现蠕变之前的回火屈氏体组织状态。

Metallographic observation shows that after creep the organization and distribution were not changed , the organization is still the tempered troostite with needle-like morphology of martensite .

预应力钢丝拉拔断裂的原因是金相组织不合理，由索氏体、屈氏体和少量的贝氏体的混合组织组成，并有马氏体产生；

The main conclusions are : The cause for prestressed wires breaking in drawing is the metallographic structure which is admixture of sorbide , troostite , bainite , and Martensite ;

该工艺在保证盘条钢具有良好的回火屈氏体和索氏体组织外，还减少了对环境的污染和对人体的危害。

The technology not only guarantees that there are good microstructures of the tempered troostite and sorbite in the wire rod steel , but also makes environmental pollution and human harm decrease much .

用砂型和金属型铸造时，加入微量铝可使含碳量在2.6～3.0%的中碳铸态材质得到屈氏体基体，并有较好的综合性能。

The addition of traces of Al could make the materials containing C ranged from 2.6-3.0 % obtain troostite matrix both in sand molds and in metal , sand the materials have good synthetic properties .

实验结果表明：马氏体的出现和基体为索氏体、屈氏体和少量的贝氏体的混合组织是断裂的主要原因；

It is showed : the formation of martensite and mixture of sorbide , troostite and bainite which is caused by the low temperature at the beginning of cooling control is the main reason of fracture ;

本文介绍了采用金属&砂复合型铸造的矿山用屈氏体高铭多元合金铸铁磨球的化学成分设计、金相组织及力学性能等特点。

Abstract The paper describes the chemical composition design , metallographic structure and mechanical properties of troostite high chromium multi-element alloy cast iron grinding balls of mine use which are produced with the metal-sand composite casting technology .

考虑了塑性变形的存在情形，对回火屈氏体和回火索氏体两种材料试样的孔边前方应力应变场进行了弹塑性有限元分析。

In this paper , plastic variation is considered and the stress-strain fields beside the holes are analyzed by means of the elastic and plastic analysis of finite element for two WOL specimens of 40 CrNi steel of troostite and sorbite micro-structures .

试验表明弹簧片的淬火加热温度应定为840～850℃，经415℃±10℃中温回火后可获得回火屈氏体组织，达到较高的弹性极限、疲劳强度，得到满意的使用效果。

The test indicates that quenching temperature of the spring would be 840 ℃ - 850 ℃, and after 415 ± 10 ℃ tempering the tempering-Troostite structure would be obtained . The higher elastic limit , the higher fatigue limit would be reached , and satisfactory result would be obtained .