The strength and tenacity of super-eutectoid steel wire have been improved notably by increasing the carbon content of the steel to more than 0.9% and controlling the heat-treatment system.
钢含磷量提高到0．9％以上，控制钢丝的热处理制度，使过共析钢丝强韧性显著提高。
To reheat hardened steel or hardened cast iron to some temperature below the eutectoid temperature for the purpose of decreasing hardness and increasing toughness.
重新加热硬化钢或硬化铸铁至某一温度，低于共析温度下，使硬度降低，韧度增加。
A simplified diagram, such as the one in Fig. 2.1, focuses on the eutectoid region and is quite useful in understanding the properties and processing of steel.
如图2.1所示的简化铁碳状态图将焦点集中在共析区，这对理解钢的性能和处理是十分有用的。
Both steel iron and cast iron have the structures of eutectoid, hypoeutectoid and hypereutectoid.
钢和铸铁都有共析、亚共析和过共析这三种组织。
The main characteristics of the rail steel are low manganese and high carbon which content is being closed to eutectoid.
其成分特征是碳含量在共析点左右的高碳低锰钢轨钢。
The microstructure and fracture process of an eutectoid pearlitic steel have been observation and analysed by means of electron-diffraction-contrast technique and SEM.
应用电子衍衬技术和扫描电镜等手段，对共析珠光体轨钢的微观结构和断裂过程，进行了观察和分析。
Pearlitic transformation in steel is a typical diffusion eutectoid transition.
钢中珠光体转变属典型的扩散型共析转变。
When such steel cools, as shown in zz 'of Fig. 2.1 the process is similar to the hypo-eutectoid case, except that the primary or pro-eutectoid phase is now cementite instead of ferrite.
当这种钢冷却时，就像图2.1的z - z线所示，除了初步的或预共析状态用渗碳体取代铁素体外，其余类似亚共析钢的情况。
When such steel cools, as shown in zz 'of Fig. 2.1 the process is similar to the hypo-eutectoid case, except that the primary or pro-eutectoid phase is now cementite instead of ferrite.
当这种钢冷却时，就像图2.1的z - z线所示，除了初步的或预共析状态用渗碳体取代铁素体外，其余类似亚共析钢的情况。
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