Computational thermodynamics aided design of Fe-C-Mn alloy exhibiting steady state pearlite growth without substitutional partitioning

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-10 DOI:10.1016/j.matlet.2025.138907

Vikash Kumar Sahu , Snehashish Tripathy , P.S.M Jena , Sandip Ghosh Chowdhury , Gopi Kishor Mandal

引用次数: 0

Abstract

This study investigates pearlitic transformation in Fe-C-Mn steels under Non-Partitioning Local Equilibrium (NPLE) conditions, where transformation occurs without long-range partitioning of substitutional elements. Unified Interaction Parameter Formalism (UIPF) based computational thermodynamics approach was employed to design Fe-C-Mn alloy for transformation under NPLE mode. The theoretically calculated growth rates and interlamellar spacing closely matched experimental results. Additionally, a thorough microstructural characterization confirmed the absence of long-range substitutional partitioning across growth front, which not only corroborated well with the theoretical prediction but also stands unique in light of absence of past experimental evidence of non-partitioned pearlite formation.

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计算热力学辅助设计Fe-C-Mn合金的稳态珠光体生长，无取代分配

本研究研究了Fe-C-Mn钢在非分配局部平衡（NPLE）条件下的珠光体转变，其中转变发生在没有替代元素的远程分配的情况下。采用基于统一相互作用参数形式（Unified Interaction Parameter Formalism， UIPF）的计算热力学方法设计了Fe-C-Mn合金在NPLE模式下的相变。理论计算的生长速率和层间间距与实验结果吻合较好。此外，全面的微观结构表征证实了生长前沿不存在长时间的替代分配，这不仅与理论预测相吻合，而且在过去缺乏无分配珠光体形成的实验证据的情况下也具有独特的意义。

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

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive