回火屈氏体

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 .

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 .

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 .