Experimental Investigation on Mechanical properties of AL7075 reinforced with HBN and SiC

DOI

10.2991/978-94-6463-662-8_4How to use a DOI?

Keywords

AL7075; HBN; SiC; Stir Casting Process

Abstract

The pursuit of lightweight maetrials, materials with high-strength has led to significant advancements in the field of aluminum matrix composites (AMCs). Among these, aluminum alloy 7075 is notable for its exceptional mechanical properties, making it a popular choice in structural, automotive and aerospace, applications. However, in the direction of further enhancing its performance, the incorporation of ceramic reinforcements has become a focal point of research. Hexagonal boron nitride (hBN) and silicon carbide (SiC) are two such reinforcements that offer advantages such as improved wear resistance, thermal stability, and increased strength. Stir casting technique is a widely used fabrication technique for producing AMCs due to its simplicity, cost-effectiveness, and ability to achieve uniform scattering of reinforcements within the metal matrix. In this process, the metal is melted, and the reinforcing materials are added while stirring, promoting a homogeneous mixture. This method not only facilitates the integration of ceramic particles but also helps in minimizing issues like agglomeration, which can detract from the mechanical properties of the fabricated composite.

The objective of this study aims to explore the fabrication of Al7075 composites reinforced by the varying weight percentages of hBN and SiC using the stir casting process. The resulting composites undergone with various analysis including hardness testing, impact testing, scanning electron microscopy (SEM) and tensile testing. In comparison towards the base aluminum alloy, findings showed that the incorporation of hBN and SiC greatly enhanced the mechanical properties, such as tensile strength, impact strength, and hardness. Optimal reinforcement composition was identified, balancing the trade-off between strength enhancement and ductility. The micro structural analysis revealed a homogeneous distribution of these reinforcements, contributing to the composites overall performance. This study underscores potential of using hBN and SiC as reinforcements in aluminum alloys to develop advanced materials suitable for aerospace, automotive, and other high-performance applications. Further research is suggested to optimize processing parameters and explore additional reinforcement combinations for enhanced performance.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - E. Venugopal Goud
AU  - M. Murali Mohan
AU  - G. Shaikshavali
PY  - 2025
DA  - 2025/03/17
TI  - Experimental Investigation on Mechanical properties of AL7075 reinforced with HBN and SiC
BT  - Proceedings of the International Conference on Advanced Materials, Manufacturing and Sustainable Development (ICAMMSD 2024)
PB  - Atlantis Press
SP  - 47
EP  - 64
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-662-8_4
DO  - 10.2991/978-94-6463-662-8_4
ID  - Goud2025
ER  -