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Fabrication of AZ91/SiC Composites by Accumulated Diffusion Bonding Process


Fabrication of AZ91/SiC Composites by Accumulated Diffusion Bonding Process
Authors : V. Sivaramakrishnan, M. Rajamuthamilselvan, S. Ramanathan
Publication Date: 06-12-2016

Authors

Author(s):  V. Sivaramakrishnan, M. Rajamuthamilselvan, S. Ramanathan

Published in:   International Journal of Engineering Research & Technology

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

Website: www.ijert.org

Volume/Issue:   Volume. 5 - Issue. 12 , December - 2016

e-ISSN:   2278-0181

 DOI:  http://dx.doi.org/10.17577/IJERTV5IS120058

Abstract

Magnesium alloy (AZ91) matrix composites (MMCs) with addition of SiC reinforcement was fabricated by using Accumulated Diffusion Bonding Process. SiC(5μm) particles dispersed in magnesium matrix composite are produced through accumulative diffusion bonding (ADB) process under vacuum atmosphere. The mechanical properties of AZ91 and AZ91-SiC composites have been evaluated and the results are compared with the unreinforced AZ91 alloy. Results of the mechanical properties revealed an increase in hardness value, maximum tensile strength. It was proposed that the strength increase due to SiC addition to AZ91 alloy was a result of a change in the matrix strength, i.e. an increase in dislocation density and a reduction of matrix grain size. However, it is also evident that the strain to failure significantly decreased as the volume fraction of the particulate increased.

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