Al-RHEA颗粒的PM路径:力学性能和滑动磨损响应

IF 12.2 1区 工程技术 Q1 MECHANICS
E. Ananiadis, Alexander Efstathios Karantzali, D. Exarchos, T. Matikas
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引用次数: 2

摘要

采用粉末冶金法制备了含难熔高熵合金MoTaNbVW的新型颗粒增强铝基复合材料,并对其性能进行了评价。采用动态纳米压痕技术对铝基体、纯铝和增强相的基本力学性能(弹性模量、硬度)进行了评价。基于纳米压痕的蠕变响应也在这三个感兴趣的领域进行了评估。硬度随颗粒的加入而增加,弹性模量和弹性区吸收能量的比值也随之增加。从位错迁移率和成核临界体积的角度探讨了蠕变响应。对制备的Al-HEA复合材料的滑动磨损性能进行了研究,结果表明,随着RHEA颗粒含量的增加,复合材料的耐磨性提高。显微结构、磨损轨迹形态和碎屑特征被用于评估所涉及的磨损机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Al-RHEA Particulates MMCs by PM Route: Mechanical Properties and Sliding Wear Response
New particle reinforced aluminum matrix composites with the addition of refractory High Entropy Alloy, MoTaNbVW, fabricated via powder metallurgy process were assessed for their properties. Basic mechanical properties (modulus of elasticity, hardness) for the aluminum matrix, the pure aluminum and the reinforcement phase were assessed by means of dynamic nano-indentation technique. Nano-indentation based creep response was also evaluated in these three areas of interest. Hardness shows an increase with the addition of the particulates and so does the elastic moduli and the ratio of the energy absorbed in the elastic region. The creep response was approached in terms of dislocation mobility and critical volume for their nucleation. The produced Al–HEA composites were also studied for their sliding wear behavior and showed that with the increase in percentage of RHEA particulates the wear resistance increases. Microstructural considerations, wear track morphologies, and debris characteristics were used for the assessment of the involved wear mechanisms.
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来源期刊
CiteScore
28.20
自引率
0.70%
发文量
13
审稿时长
>12 weeks
期刊介绍: Applied Mechanics Reviews (AMR) is an international review journal that serves as a premier venue for dissemination of material across all subdisciplines of applied mechanics and engineering science, including fluid and solid mechanics, heat transfer, dynamics and vibration, and applications.AMR provides an archival repository for state-of-the-art and retrospective survey articles and reviews of research areas and curricular developments. The journal invites commentary on research and education policy in different countries. The journal also invites original tutorial and educational material in applied mechanics targeting non-specialist audiences, including undergraduate and K-12 students.
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