Table of Contents
Indian Journal of Materials Science
Volume 2016, Article ID 5671532, 6 pages
http://dx.doi.org/10.1155/2016/5671532
Research Article

Experimental Evaluation and Characterization of Electron Beam Welding of 2219 AL-Alloy

1Military Technical College, Kobry El-Kobbah, Cairo 11766, Egypt
2Sudanese Armed Forces, AL Khartoum, Sudan

Received 3 March 2016; Revised 22 June 2016; Accepted 21 July 2016

Academic Editor: Pradeep Lancy Menezes

Copyright © 2016 Mohamed Sobih et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aiming to reduce the weight of components, thus allowing a profit in terms of energy saving, automotive industry as well as aircraft industry extensively uses aluminum alloys. The most widely used joining technology in aircraft industry is riveting, while welding seems to be used in the car industry in the case of aluminum alloys. However, welding technology is characterized by many defects, such as gas porosity; oxide inclusions; solidification cracking (hot tearing); and reduced strength in both the weld and the heat affected zones which could limit its development. Many techniques are used for aluminum alloys welding, among them is electron beam welding (EBW), which has unique advantages over other traditional fusion welding methods due to high-energy density, deep penetration, large depth-to-width ratio, and small heat affected zone. The welding parameters that yield to optimal weld joint have been previously obtained. These optimal parameters were validated by welding a specimen using these parameters. To evaluate this optimal weld joint, complete, microstructural observations and characterization have been carried out using scanning electron microscopy, optical microscopy, and energy dispersive X-ray analysis. This evaluation leads to description and quantification of the solidification process within this weld joint.