Cr对AlMo0.5NbTa0.5TiZr耐火高熵合金的异常氧化行为

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

Materials Letters Pub Date : 2025-04-14 DOI:10.1016/j.matlet.2025.138579

J. Park, J. Oh, S. Kim, S. Lee, C.H. Chung, J.S. Park

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引用次数: 0

摘要

本文研究了Cr的加入对AlMo0.5NbTa0.5TiZrCrx （x = 0,0.5, 2,5）高熵合金显微组织和高温氧化行为的影响。在1300°C下长达5小时的实验室氧化测试显示，0.5 at% Cr合金具有优异的抗氧化性。Cr含量的增加导致金属间区优先偏析，而过量的Cr加速了CrO3(g)的挥发，降低了抗氧化性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

$Abnormal oxidation behaviors of Cr additions on AlMo0.5NbTa0.5TiZr refractory high-entropy alloy$

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Abnormal oxidation behaviors of Cr additions on AlMo0.5NbTa0.5TiZr refractory high-entropy alloy

This study investigates the effect of Cr additions on the microstructures and high-temperature oxidation behaviors of AlMo_0.5NbTa_0.5TiZrCr_x (x = 0, 0.5, 2, 5) refractory high entropy alloys. Lab-scale oxidation tests at 1300 °C for up to 5 h revealed superior oxidation resistance in the 0.5 at% Cr alloy. Increased Cr content led to preferential segregation in intermetallic regions, while excessive Cr accelerated CrO₃(g) volatilization, compromising oxidation resistance.

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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