Phase transformation kinetics model for metals

IF 15.4 1区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Plasticity Pub Date : 2026-01-01 Epub Date: 2025-12-06 DOI:10.1016/j.ijplas.2025.104579

Daniel N. Blaschke, Abigail Hunter, Dean L. Preston

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引用次数: 0

Abstract

We develop a new model for phase transformation kinetics in metals by generalizing the Levitas–Preston (LP) phase field model of martensite phase transformations (see Levitas and Preston (2002a,b) and Levitas et al. (2003)) to arbitrary pressure. Furthermore, we account for and track: the interface speed of the pressure-driven phase transformation, properties of critical nuclei, as well as nucleation at grain sites and on dislocations and homogeneous nucleation. The volume fraction evolution of each phase is described by employing KJMA (Kolmogorov, 1937; Johnson and Mehl, 1939; Avrami, 1939, 1940, 1941) kinetic theory. We then test our new model for iron under ramp loading conditions and compare our predictions for the

α \to ϵ

iron phase transition to experimental data of Smith et al. (2013). More than one combination of material and model parameters (such as dislocation density and interface speed) led to good agreement of our simulations to the experimental data, thus highlighting the importance of having accurate microstructure data for the sample under consideration.

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金属相变动力学模型

通过将马氏体相变的Levitas - Preston （LP）相场模型（见Levitas and Preston （2002a,b）和Levitas etal .(2003)）推广到任意压力，我们开发了一个新的金属相变动力学模型。此外，我们解释和跟踪：压力驱动相变的界面速度，临界核的性质，以及晶粒位置的形核和位错和均匀形核。采用KJMA （Kolmogorov, 1937; Johnson and Mehl, 1939; Avrami, 1939, 1940, 1941）动力学理论描述各相的体积分数演化。然后，我们在斜坡加载条件下测试我们的新铁模型，并将我们对α→ε铁相变的预测与Smith等人（2013）的实验数据进行比较。多种材料和模型参数（如位错密度和界面速度）的组合导致我们的模拟与实验数据很好地一致，从而突出了对所考虑的样品拥有准确的微观结构数据的重要性。

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

International Journal of Plasticity 工程技术-材料科学：综合

CiteScore

15.30

自引率

26.50%

发文量

256

审稿时长

46 days

期刊介绍： International Journal of Plasticity aims to present original research encompassing all facets of plastic deformation, damage, and fracture behavior in both isotropic and anisotropic solids. This includes exploring the thermodynamics of plasticity and fracture, continuum theory, and macroscopic as well as microscopic phenomena. Topics of interest span the plastic behavior of single crystals and polycrystalline metals, ceramics, rocks, soils, composites, nanocrystalline and microelectronics materials, shape memory alloys, ferroelectric ceramics, thin films, and polymers. Additionally, the journal covers plasticity aspects of failure and fracture mechanics. Contributions involving significant experimental, numerical, or theoretical advancements that enhance the understanding of the plastic behavior of solids are particularly valued. Papers addressing the modeling of finite nonlinear elastic deformation, bearing similarities to the modeling of plastic deformation, are also welcomed.