Damping properties and mechanism of aluminum matrix composites reinforced with glass cenospheres

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2024-09-01 DOI:10.1016/S1003-6326(24)66573-8

Kai SUN , Lin WANG , Hang SU , Jia-yi GENG , Qiang ZHANG , Bo MENG , Zeng-yan WEI , Gao-hui WU

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Abstract

The damping properties were improved by preparing Al matrix composites reinforced with glass cenospheres through the pressure infiltration method. Transmission electron microscopy and scanning electron microscopy were employed to characterize the microstructure of the composites. The low-frequency damping properties were examined by using a dynamic mechanical thermal analyzer, aiming at exploring the changing trend of damping capacity with strain, temperature, and frequency. The findings demonstrated that the damping value rose as temperature and strain increased, with a maximum value of 0.15. Additionally, the damping value decreased when the frequency increased. Dislocation damping under strain and interfacial damping under temperature served as the two primary damping mechanisms. The increase in the density of dislocation strong pinning points following heat treatment reduced the damping value, which was attributed to the heat treatment enhancement of the interfacial bonding force of the composites.

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玻璃纤维增强铝基复合材料的阻尼特性和机理

通过压力渗透法制备出用玻璃纤维球增强的铝基复合材料，从而改善了其阻尼性能。透射电子显微镜和扫描电子显微镜用于表征复合材料的微观结构。使用动态机械热分析仪检测了低频阻尼特性，旨在探索阻尼能力随应变、温度和频率的变化趋势。研究结果表明，阻尼值随着温度和应变的增加而上升，最大值为 0.15。此外，当频率增加时，阻尼值降低。应变下的位错阻尼和温度下的界面阻尼是两种主要的阻尼机制。热处理后差排强钉点密度的增加降低了阻尼值，这是由于热处理增强了复合材料的界面结合力。

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.