时间温度转变和热循环（D03 ↔ L12）对 Fe3Ga 型合金结构的影响

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2024-10-24 DOI:10.1016/j.intermet.2024.108528

V.V. Palacheva , A.A. Shcherbakov , V.V. Cheverikin , E.N. Zanaeva , A.M. Balagurov , I.S. Golovin

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引用次数: 0

摘要

对 Fe3Ga 型合金中 D03 和 L12 相之间的一阶转变动力学进行了分析。通过 SEM-EBSD 分析和不同热处理后的磁致伸缩测试，以及 VSM 和 DSC 的原位机制，对样品的结构和磁致伸缩进行了仔细的控制。根据铁-27Ga 合金的 EBSD 分析结果，在 400 至 550 °C 的温度范围内构建了时间-温度-转变（TTT）图的 C 型曲线。TTT 图显示，L12 相的成核率在 400 → 475 → 550 ℃ 的顺序中增加，而生长率在大约 500-525 ℃ 时达到最大值。首次研究了 D03 ↔ L12 热循环对 D03 → L12 转变动力学的影响。在相同的退火温度和时间下，样品重新淬火并随后退火后，L12 相的数量与第一次循环淬火和随后退火相比显著增加，这表明了之前转变的记忆效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Time temperature transition and effect of thermocycling (D03 ↔ L12) on Fe3Ga-type alloy structure

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Time temperature transition and effect of thermocycling (D03 ↔ L12) on Fe3Ga-type alloy structure

An analysis of the first order transition kinetics between D0₃ and L1₂ phases in Fe₃Ga-type alloy is carried out. Structure and magnetostriction of the samples were carefully controlled by SEM-EBSD analysis and magnetostriction tests after different heat treatments, and additionally in in situ regime by VSM and DSC. C-shaped curves for time-temperature-transition (TTT) diagram based on the results of the EBSD analysis of Fe-27Ga alloy are constructed in the temperature range between 400 and 550 °C. TTT diagram shows that the nucleation rate for L1₂ phase increases in the sequence 400 → 475 → 550 °C, while the growth rate reaches a maximum at about 500–525 °C. Effect of D0₃ ↔ L1₂ thermocycling on the kinetic of the D0₃ → L1₂ transition is studied for the first time. The amount of the L1₂ phase after sample re-quenching and subsequent annealing at the same annealing temperature and time, significantly increases compared with the first cycle quenching and subsequent annealing, demonstrating memory effect of previous transitions.

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.