数据驱动的双相和三相体系晶粒长大动力学分析
Data-driven analysis of grain-growth kinetics in duplex and triplex systems
摘要：
在多相系统中晶粒生长过程中，单个相-晶粒的演化动力学与整个微观组织生长速率之间的关系还没有得到令人信服的理解。因此，在这项工作中，舒适的可理解的统计工具来实现的多相系统的整体晶粒生长动力学，双相和三相，具有不同的相分数的演变相晶粒的影响。一个数据集，能够呈现统计上显着的，和访问，信息是通过建模和分析，在二十个不同的多晶系统，包括14个三重和五个双相微结构与不同的相分数，和一个均匀的单相系统，在多相场框架中的晶粒生长。这些广泛的微观结构的统计分析揭示，在各向同性的晶粒生长过程中，双相和三相系统的整体演化动力学主要由主相晶粒的生长速率决定，而与相分数无关。此外，通过多元非线性回归，人们意识到，随着主相晶粒的体积分数的增加，由双相和三相显微组织所表现出的整体各向同性晶粒生长速率按照一定的指数关系增加。此外，本研究揭示，虽然在三重微结构中的晶粒生长过程中的各个相晶粒的演变表现出一定程度的相互依赖性，但在具有相对低体积分数的次要相的晶粒之间观察到最少的相互作用。
英文摘要：
During grain growth in multiphase system, a convincing understanding on how the evolution kinetics of an individual phase-grains relates to the growth rate of entire microstructure is yet to be achieved. Therefore, in this work, comfortably comprehensible statistical tools are employed to realise the influence of the evolving phase-grains on the overall grain-growth kinetics of multiphase systems, both duplex and triplex, with varying phase-fractions. A dataset capable of rendering statistically significant, and accessible, information is built by modelling, and analysing, grain growth in twenty different polycrystalline systems, comprising of fourteen triplex and five duplex microstructures with varying phase-fractions, and one homogeneous single-phase system, in multiphase-field framework. Statistical analyses of these wide-range of microstructures unravel that, during isotropic grain-growth, the overall evolution kinetics of the duplex and triplex systems are principally governed by the growth-rate of the major-phase grains, irrespective of the phase-fractions. Furthermore, through multiple non-linear regression, it is realised that with increase in the volume-fraction of the major-phase grains, the overall isotropic grain-growth rate exhibited by duplex and triplex microstructures increase in accordance with a definite exponential relation. Additionally, the present investigation unravels that, while the evolution of individual phase-grains during grain growth in triplex microstructures exhibit a level of interdependency, the least interaction is observed between the grains of minor-phases with relatively low volume-fraction.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
