Phase based Study of Solidified Structures evolved during the TIG welding of 2219-T87 Aluminum Alloy
Keywords:
Microstructure, TIG welding, Filler Alloys, Metallography, Scanning Electron microscopyAbstract
Aluminum alloys particularly 2219 is being abundantly used in aerospace industry due to high strength to weight ratio and excellent weldability. After welding, the sudden reduction in mechanical properties of joint as compared to that of the parent metal is a serious issue in fabrication industry. In this research work, a comparative study has been made to investigate the dependence of mechanical properties on variation of filling material composition and resultant microstructure developed in a square butt joint of 2219 aluminum alloy plates welded by tungsten inert gas (TIG) welding process using different filler materials including ER-2319, ER-4043 and ER-5356. The variation in hardness and ultimate tensile strength values was correlated with the grain morphology, composition, morphology and volume of eutectic phase along the grain boundaries found in base metal (BM), heat affected zone (HAZ) and weld zone (WZ).It was observed that ER-2319 WZ gives better properties due to its compatible primary and eutectic phases. However ER-5356 WZ showed poor compatibility due to porosity formation and variation of microstructure within the WZ.
Additional Files
Published
How to Cite
Issue
Section
License
Authors who publish with this journal agree to the following terms:- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).