Investigation of the Effect of Wire Electrical Discharge Machining on the Fracture Toughness of Aluminum-Boron Carbide Composite

Author:

Al-Ethari Haydar,Fadhil Zahraa

Abstract

Abstract Aluminum metal matrix composites reinforced by ceramic particles have a wide acceptance in engineering applications due to their mechanical and physical properties. One of the major challenges in machining these composites by the conventional machining operations is the presence of the abrasive particles, which affects the tool life and the required surface finish. Electro discharge machining process is widely used instead of conventional methods to overcome these challenges. Therefore, it is essential to study the influence of the electro-discharge machining on its fracture toughness, as it is the most important structural integrity indicator in the wide range applications of the studied composites. In this work, all samples were prepared by the stir casting method with using a squeezing pressure during the solidification. Samples were reinforced by (0, 2, 4, and 6wt %) of B4C particles with a size of 0.387μm. The fracture toughness studied were based on the stress intensity factor, determined experimentally by using compact tensile test and numerically using the finite element method. The fracture toughness improvement was recorded for the samples containing 4wt% of B4C.

Publisher

IOP Publishing

Subject

General Medicine

Reference10 articles.

1. Forgeability andMachinability of Stir Cast Aluminum Alloy Metal Matrix Composites;Behera;Journal of Minerals & Materials Characterization & Engineering,2011

2. Effect of Boron Carbide Reinforcement on Aluminium Matrix Composites;Gopal Krishna;International Journal of Metallurgical & Materials Science and Engineering (IJMMSE),2013

3. A Review on Particulate Reinforced Aluminum Metal Matrix Composites;Attar;Journal of Emerging Technologies and Innovative Research (JETIR),2015

4. Influence of Boron Carbide Reinforcement on Mechanical Properties of Aluminum Base Composite Prepared by Stir and Squeeze Casting;Fadhil;Journal of Babylon University/Engineering Sciences,2017

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