期刊
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
卷 16, 期 1, 页码 147-158出版社
ELSEVIER URBAN & PARTNER SP Z O O
DOI: 10.1016/j.acme.2015.07.001
关键词
Al-B4C (micro and nano) composites; Ultrasonic cavitation; Mechanical and wear properties
Lightweight aluminium metal matrix nanocomposites play a major role in automobile, aerospace and other industries. This work aimed to investigate the effect of the addition of micro- and nano-boron carbide particles to aluminium on the mechanical properties of the composites. The micro- and nanocomposites containing different weight % of B4C particles were fabricated using stir- and ultrasonic cavitation-assisted casting processes. The fabricated micro and nano B4C particle-reinforced composites were characterized using scanning electron microscopy (SEM) and an X-ray diffractometer. Tensile, hardness, impact and wear tests were carried out in order to evaluate the mechanical properties of the micro- and nanocomposites. The tensile test results showed that the properties of the samples containing up to 6% nano B4C-reinforced composites were better than the micro B4C-reinforced composites. The study also indicated that the ductility and impact energy of the nanocomposites were better than the micro B4C particle-reinforced composites. The wear resistance of the nanocomposite significantly increased when the B4C content was increased up to 8% of addition, and this increase was more pronounced than that resulting from micro B4C particle-reinforced composites. (C) 2015 Politechnika Wrodawska. Published by Elsevier Sp. z o.o. All rights reserved.
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