An analytical model of grain growth considering the conjoint effects of precipitate pinning and solute drag in steel

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Letters Pub Date : 2022-10-03 DOI:10.1080/09500839.2022.2123113

J. Maity

引用次数: 1

Abstract

ABSTRACT An analytical model is developed to explain the kinetics of grain growth in steel that takes into account all feasible prime phenomena; namely, surface energy reduction, precipitate pinning effect and solute drag effect. The shapes of matrix grains and the precipitates are assumed to be tetrakeidecahedron and spherical, respectively. A single solute and a single type of precipitate are further assumed to be responsible for the solute drag and the precipitate pinning, respectively. An explanation of drag energy is provided in terms of Gibbs free energy change for solute segregation that eventually merges to the well-known Langmuir–McLean relationship. The developed model is validated in view of the existing database in available literature. A new methodology of grain growth analysis is accordingly proposed on the basis of the conceptualised ‘effective migration coefficient’ of the system.

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考虑钢中沉淀钉扎和溶质阻力共同作用的晶粒长大分析模型

摘要建立了一个分析模型来解释钢中晶粒生长的动力学，该模型考虑了所有可行的素数现象；即表面能降低、沉淀钉扎效应和溶质拖曳效应。基体晶粒和沉淀物的形状分别假定为十面体和球形。进一步假设单一溶质和单一类型的沉淀物分别负责溶质拖曳和沉淀物钉扎。根据溶质偏析的吉布斯自由能变化对阻力能进行了解释，最终融合到众所周知的Langmuir–McLean关系中。根据现有文献中的现有数据库对所开发的模型进行了验证。在系统“有效迁移系数”概念的基础上，提出了一种新的粮食生长分析方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.