高通量测定共晶钛-铬-钼合金中的相互扩散率和原子迁移率

IF 6.2 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Research and Technology-Jmr&t Pub Date : 2024-09-14 DOI:10.1016/j.jmrt.2024.09.111
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引用次数: 0

摘要

全面了解钛-铬-钼体系中的扩散系数和原子迁移率对于建立钛基高强度钛合金的原子迁移率数据库至关重要。本研究在温度为 1373 至 1473 K 的 bcc Ti-Cr-Mo 合金中制备并测量了九组固/固扩散偶,并使用扫描电子显微镜(SEM)和电探针显微分析(EPMA)技术分别测试了其微观结构和成分距离。采用 Matano-Kirkaldy 法和数值反演法分别测定了双cc Ti-Cr-Mo 合金中的扩散系数。上述两种方法得出的扩散系数具有良好的一致性。钛-铬-钼体系的原子迁移率参数由 HitDIC 软件提供。在铬和钼的含量分别为 0 至 20 摩尔%和 0 至 14 摩尔%时,生成了相互扩散系数的三维图。此外,应用阿伦尼乌斯方程还能确定频率因子和活化能在温度和成分方面的变化。
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High-throughput determination of interdiffusivity and atomic mobilities in bcc Ti–Cr–Mo alloys

A comprehensive understanding of the diffusion coefficients and atomic mobilities in the Ti–Cr–Mo system is crucial for establishing an atomic mobility database for titanium-based high-strength titanium alloys. In the present work, nine sets of solid/solid diffusion couples were prepared and measured in bcc Ti–Cr–Mo alloys, with the temperatures ranging from 1373 to 1473 K. Scanning electron microscopy (SEM), and Electro Probe Micro-Analysis (EPMA) techniques were used to respectively test its microstructure and composition distance. The diffusion coefficients in bcc Ti–Cr–Mo alloys were determined using the Matano-Kirkaldy method and numerical inverse method respectively. The diffusion coefficients obtained from the above two methods exhibit good consistency. The atomic mobility parameters for the Ti–Cr–Mo systems were provided with the assistance of HitDIC software. A three-dimensional plot of interdiffusivities was generated for chromium and molybdenum contents ranging from 0 to 20 mol % and 0–14 mol %. Moreover, the application of the Arrhenius equation enabled the determination of changes in frequency factors and activation energies concerning temperature and composition.

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来源期刊
Journal of Materials Research and Technology-Jmr&t
Journal of Materials Research and Technology-Jmr&t Materials Science-Metals and Alloys
CiteScore
8.80
自引率
9.40%
发文量
1877
审稿时长
35 days
期刊介绍: The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.
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