bcc Ti-V-Mo合金的扩散率和原子迁移率

IF 1.9 3区材料科学 Q4 CHEMISTRY, PHYSICAL Calphad-computer Coupling of Phase Diagrams and Thermochemistry Pub Date : 2023-11-11 DOI:10.1016/j.calphad.2023.102633

Hongyu Zhang , Ning Gao , Weimin Bai , Maohua Rong , Jiang Wang , Ligang Zhang , Libin Liu

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引用次数: 0

摘要

为了全面探索bcc Ti-V-Mo合金的扩散动力学，在Ti-V-Mo合金的bcc相内制备了16组扩散偶。分别在1373 K和1473 K下对扩散偶进行了退火处理。利用电子探针显微分析技术(EPMA)获得了其组成谱。采用Whittle-Green和Hall方法计算了bcc Ti-V-Mo合金的扩散系数。在已有热力学描述的基础上，利用hot - calc软件的DICTRA模块对bcc Ti-V-Mo体系的原子迁移率参数进行了评估。将模拟的成分-距离曲线和扩散路径与实验值进行了比较，发现两者具有显著的一致性。

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Diffusivities and atomic mobilities in bcc Ti–V–Mo alloys

In pursuit of a comprehensive exploration into the diffusion kinetics of bcc Ti–V–Mo alloys, sixteen sets of diffusion couples were prepared within the bcc phase of Ti–V–Mo alloys. These diffusion couples were subjected to annealing at 1373 K and 1473 K. Composition profiles were obtained by means of the electron probe micro-analysis technique (EPMA). The calculation of diffusivities in bcc Ti–V–Mo alloys was performed using the Whittle-Green and Hall methods. Based on available thermodynamic descriptions, the atomic mobility parameters of the bcc Ti–V–Mo system were assessed by using the DICTRA module of the Thermo-Calc software. A comparison is made between the simulated composition-distance curve and the diffusion path with the experimental values, revealing a significant level of concordance.

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来源期刊

Calphad-computer Coupling of Phase Diagrams and Thermochemistry 化学-热力学

CiteScore

4.00

自引率

16.70%

发文量

审稿时长

2.5 months

期刊介绍： The design of industrial processes requires reliable thermodynamic data. CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) aims to promote computational thermodynamics through development of models to represent thermodynamic properties for various phases which permit prediction of properties of multicomponent systems from those of binary and ternary subsystems, critical assessment of data and their incorporation into self-consistent databases, development of software to optimize and derive thermodynamic parameters and the development and use of databanks for calculations to improve understanding of various industrial and technological processes. This work is disseminated through the CALPHAD journal and its annual conference.