A Reassessment of Ti-C-N based on a Critical Review of Available Assessments of Ti-N and Ti-C
A Reassessment of Ti-C-N based on a Critical Review of Available Assessments of Ti-N and Ti-C
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基于对 Ti-N 和 Ti-C 现有评估的严格审查对 Ti-C-N 进行重新评估
DOI：
10.1515/ijmr-1999-900712
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
B. Sundman
中科院分区：
文献类型：
--
作者：
Lucia F. S. Dumitrescu;M. Hillert;B. Sundman
由于Ti-Al-C系统的热力学评估困难，Ti-C系统已被重新热力学评估，表明TiC的稳定性应降低。Ti-C系的新优化使fcc（δ）相的稳定性降低，特别是在1800 K以下。基于现有的Ti-N系统描述和新的Ti-C系统描述，重新评估了三元Ti-C-N系统。利用不同成分的碳氮化钛与液态Fe之间的平衡信息，估算了Ti-C-N体系中fcc（δ）中C与N之间的相互作用能。因此，Ti-C-N系统的新评估与碳氮化钛在各种Fe相中的溶解度的新评估一致。为了拟合实验信息，确定了液相、α相和δ相相互作用参数的新值。使用新的评估计算的相图。
The Ti-C system has been thermodynamically reassessed due to difficulties in the thermodynamic assessment of the Ti-Al-C system indicating that the stability of the TiC should be decreased. The new optimization of the Ti-C system made the fcc (δ) phase less stable, especially below 1800 K. The ternary Ti-C-N system was also reassessed based on an existing description of the Ti-N system and the new one for the Ti-C system. Information on the equilibrium between titanium carbonitride of various compositions and liquid Fe was used in order to estimate the interaction energy between C and N in fcc (δ) in the Ti-C-N system. The new assessment of the Ti-C-N system is thus consistent with a new assessment of the solubilities of titanium carbonitride in the various Fe phases. To fit the experimental information new values for the interaction parameters in liquid, α and δ phase were determined. Phase diagrams calculated using the new assessment are presented.