Investigations on tensile fractography and wear characteristics of Al7075-Al2O3-SiC Hybrid Metal Matrix Composites routed through liquid metallurgical techniques

M. Ravikumar; R. Suresh; H. N.  Reddappa; Y. S.  Ram Mohan; C. R.  Nagaraja; E. R. Babu

doi:10.3221/IGF-ESIS.56.13

Investigations on tensile fractography and wear characteristics of Al7075-Al2O3-SiC Hybrid Metal Matrix Composites routed through liquid metallurgical techniques

Authors

M. Ravikumar Department of Mechanical Engineering, R L Jalappa Institute of Technology, Bangalore (R), Karnataka, India
R. Suresh Department of Mechanical and Manufacturing Engineering, MSRUAS, Bangalore, Karnataka, India
H. N. Reddappa Department of Mechanical Engineering, Bangalore Institute of Technology, Bangalore, Karnataka, India
Y. S. Ram Mohan Department of Aerospace Engineering, B M S College of Engineering, 560019, Bangalore, India
C. R. Nagaraja Department of Mechanical Engineering, Bangalore Institute of Technology, Bangalore, Karnataka, India
E. R. Babu Department of Mechanical Engineering, Bangalore Institute of Technology, Bangalore, Karnataka, India

DOI:

https://doi.org/10.3221/IGF-ESIS.56.13

Keywords:

Al7075, MMCs, Tensile, Fractography analysis, Hardness, Wear loss

Abstract

The Al₂O₃-SiC reinforced Al7075 Metal Matrix Composite (MMCs) is fabricated through liquid metallurgical technique. Ceramic particulates were amalgamated into aluminium alloy to achieve improved mechanical properties and wear resistance. Al-7075/Al₂O₃/SiC hybrid MMCs were produced by reinforcing 2%, 3%, 4% and 5% of Al₂O₃ and 3%, 5% and 7% of SiC particles. Microstructural analysis was carried out to evaluate the uniform dispersal of reinforcing particulates within the base matrix. The output results indicate that the mechanical properties of the hybrid MMCs enhanced by increase the wt. % of ceramic particulates. Tensile fractography results show the internal fracture structure of the tensile test specimens in which the particulates fracture and pullouts were observed. The wear characteristics of developed composites are studied using pin on disc apparatus. The high wear resistance is observed at 5% Al₂O₃ + 7% SiC reinforced MMCs.

Downloads

Download data is not yet available.

Downloads

Visual Abstract

Published

28-03-2021

Issue

Vol. 15 No. 56 (2021): April 2021

Section

Advanced Manufacturing and Processing

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

Open Access Statement

Frattura ed Integrità Strutturale (Fracture and Structural Integrity, F&SI) is an open-access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the DOAI definition of open access.

F&SI operates under the Creative Commons Licence Attribution 4.0 International (CC-BY 4.0). This allows to copy and redistribute the material in any medium or format, to remix, transform and build upon the material for any purpose, even commercially, but giving appropriate credit and providing a link to the license and indicating if changes were made.

How to Cite

Investigations on tensile fractography and wear characteristics of Al7075-Al2O3-SiC Hybrid Metal Matrix Composites routed through liquid metallurgical techniques. (2021). Frattura Ed Integrità Strutturale, 15(56), 160-170. https://doi.org/10.3221/IGF-ESIS.56.13