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分别在600、650和700℃度对Ti-Mo低碳钢进行等温处理,对其力学性能进行检测并利用扫描电镜观察其显微组织,最后通过透射电镜和选区电子衍射对纳米尺寸碳化物的相间析出特征进行研究分析。结果表明:相间析出的排间距随着处理温度的降低而减小;排间距的平均值是常量,但单个排间距的值变化很大,两个特定行之间的排间距变化不大;不同方向析出的相间析出粒子之间存在着竞争关系,当两方相遇时,其中某一方向或被迫中断,或发生偏转直至两者的方向几乎相同,这是形成不同的相间析出台阶高度的一个原因;相间析出粒子的析出面并非只固定在{110}α面上,相间析出也可以在铁素体的其他晶面上发生。
Ti-Mo mild steel was isothermally treated at 600, 650 and 700 ℃ respectively, the mechanical properties of the Ti-Mo mild steel were examined and the microstructure of the Ti-Mo mild steel was observed by scanning electron microscopy. Finally, the microstructure of the nanosize carbide Phase precipitation characteristics of research and analysis. The results show that the distance between the two phases decreases with the decrease of the treatment temperature. The average value of the row spacing is constant, but the value of the single row varies greatly and the row spacing between the two particular rows changes little. There is a competing relationship between precipitated particles in the direction of precipitation. When either side meets, either one of them is either interrupted or deflected until the directions of the two are almost the same, one for the formation of different interphase precipitation levels The reason is that the precipitated surface of precipitated particles is not only fixed on the {110} α surface, but also precipitates on other crystal surfaces of ferrite.