Microstructural characterization and thermal stability of AlCrFeNiTi + Y2O3 high-entropy alloy nanocomposites prepared by mechanical alloying

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

Materials Letters Pub Date : 2024-07-20 DOI:10.1016/j.matlet.2024.137018

引用次数: 0

Abstract

The study focuses on the development of lightweight nanocomposites using a powder metallurgy route. Y₂O₃ nanoparticles (1, 2, and 3 wt%) are added to an AlCrFeNiTi high-entropy alloy (HEA) matrix. The addition of Y₂O₃ nanoparticles leads to the formation of a small intermetallic phase in HEA matrix. With increasing Y₂O₃ wt.%, the size of the crystallites diminishes starting from 32.7 nm (HEA) to 10.3 nm (HEAnC-3). TEM examination reveals that the alloy is nanocrystalline with an average grain size of 39.2 ± 2.1 nm. DSC study indicates that the nanocomposites are stable up to 1000 °C, making them ideal for high-temperature applications.

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机械合金化制备的 AlCrFeNiTi + Y2O3 高熵合金纳米复合材料的微结构表征和热稳定性

本研究的重点是利用粉末冶金工艺开发轻质纳米复合材料。在铝铬铁镍钛高熵合金（HEA）基体中加入 Y2O3 纳米粒子（1、2 和 3 wt%）。Y2O3 纳米粒子的加入会在 HEA 基体中形成一个小的金属间相。随着 Y2O3 重量百分比的增加，结晶尺寸从 32.7 nm（HEA）减小到 10.3 nm（HEAnC-3）。TEM 检查显示合金为纳米晶，平均晶粒大小为 39.2 ± 2.1 nm。DSC 研究表明，纳米复合材料在 1000 °C以下都很稳定，因此非常适合高温应用。

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