Russian Journal of Non-Ferrous Metals

, Volume 59, Issue 1, pp 93–101 | Cite as

Microstructural and Mechanical Characterization of as Weld and Aged Conditions of AA2219 Aluminium Alloy by Gas Tungsten Arc Welding Process

  • S. Arunkumar
  • P. Sathiya
  • K. Devakumaran
  • S. Ramesh Kumar
Physical Metallurgy and Heat Treatment


In this article, Welding of AA2219 aluminium alloy using Gas tungsten arc welding process (GTAW) and evaluation of metallurgical, mechanical and corrosion properties of the joints are discussed. The weld samples were subjected to ageing process at the temperature range of 195°C for a period of 5 h to improve the properties. AA2219 aluminium plates of thickness of 25 mm were welded using gas tungsten arc welding (GTAW) process in double V butt joint configuration. The input parameters considered in this work are welding current, voltage and welding speed. Tensile strength and hardness were measured as performance characteristics. The variation in the properties were justified with the help of microstructures. The same procedures were repeated for post weld heat treated samples and a comparison was made between as weld condition and age treated conditions. The post weld heat samples had better tensile strength and hardness values on comparing with the as weld samples. Fracture surface obtained from the tensile tested specimen revealed ductile mode of failure.


AA2219 aluminum alloy GTAW ageing microstructure tensile property hardness fractography 


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Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  • S. Arunkumar
    • 1
  • P. Sathiya
    • 1
  • K. Devakumaran
    • 2
  • S. Ramesh Kumar
    • 3
  1. 1.Department of Production EngineeringNational Institute of Technology TiruchirappalliTiruchirappalliIndia
  2. 2.Welding Research Institute, BHELTiruchirappalliIndia
  3. 3.School of Mechanical EngineeringSASTRA UniversityThanjavurIndia

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