Abstract

Due to exception characteristics, aluminum and its alloy are the major potential candidate in heavy structural industries such as aircraft and automobiles. However, this alloy is difficult to weld using conventional fusion welding. This process would alter the metallurgical properties of this alloy through the heating and cooling cycle. Hence, in this investigation, an attempt has been made to join AA2219 alloy by electron beam welding. Generally, the obtained tensile strength was low in a welded joint. The post-weld heat treatment is a technique to improve the joint's stability in heat-treatable aluminum alloy. Solution treatment, artificial aging, and solution treatment followed by artificial aging employed the strength of electron beam weld. From the experimental report, the solution treated followed by aging was found to have higher strength than other joints due to the uniform distribution of strengthening precipitates.

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