【摘要】 通过热力学计算及实验，研究了含 Ｔｉ微合金钢在液态及凝固过程中 ＴｉＮ的析出规律研究表明，通过调整微合金钢中 Ｎ和 Ｔｉ含量，可以控制 ＴｉＮ的析出时机和形态，减小其对钢性能的有害影响；还探讨了利用液态析出细小、弥散的 ＴｉＮ作为钢液结晶的形核中心以细化铸态组织，得到等轴细晶的可能性更多还原

【Abstract】 The precipitated behavior of TiN in liquid steels and during solidification of the microalloyed steels containing Ti has been studied by experiment and thermodynamic calculation. The results show that precipitation occasion and condition of TiN in the microalloyed steels can be controlled by adjusting the content of N and Ti, that may reduce its detriment to the steel properties. The probability of utilizing the fine and disperse TiN in liquid steel as the nuclei for crystallization of the casting structure, which could obtain fine and equiaxial grains, was also discussed.更多还原