Abstract
Development of microstructure in the weld pool as well as in the partially molten zone is influenced by weld geometry and cooling of the weld metal besides heat input. Evolution of refined microstructure has definite advantage in AA2219 weldment to restrict the crack path. In the present paper, mechanisms of microstructure development in single pass and multipass gas tungsten arc welding of Al-alloy AA2219 alloy have been studied. Role of backing bar material and weld configuration in development of morphology and growth of microstructure have been discussed.
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References
Davies G J, and Garland T G, Int Met Rev 20 (1974) 83.
Peterson W A, Weld J 52 (1973) 74s.
Kou S and Le Y, Metall Trans A 164 (1985) 1345.
Hartman J A., Beil R J, and Hahn G T, Weld J (1987) 733.
D’Annessa A T, Weld J 45 427s.
Kou S, Welding Metallurgy, John Wiley and Sons, New York (1987), p 29.
Gupta R K, and Narayan Murty S V S, Eng Fail Anal 13 (2006) 1370.
Gittos N F, and Scott M H, Weld J 60 (1981) 95s.
Ghosh B R, Biju Nair S, Gupta R K, and Sinha P P, A Method of Welding Aluminum Alloy for Obtaining Higher Yield Strength, Patent No. 1136/CHE/2004, dated 01/11/04.
Gupta R K, Karthikeyan M K, Ghosh B R, and Sinha P P, Australas Weld J 52 (2007) 42.
Gupta R K, Ghosh B R, Biju S, and Sinha P P, Australas Weld J 54 (2009) 37.
Ghosh B R, Gupta R K, Biju S, and Sinha P P, J Solid Mech Mater Eng JSME 1 (2007) 459.
Sawage W F, Lundin C D, and Aronson A H, Weld J 44 (1965) 175s.
Ganaha G, Pearce B P, and Kerr H W, Met Trans 11A (1980) 1351.
Pearce B P, and Ken H W, Met Trans 12B (1981) 479.
Kou S, and Sun D K, Met Trans 16A (1985) 203.
Acknowledgments
Authors are thankful to D.D., M.M.E. for valuable suggestions and Director, VSSC for granting permission to publish this work. This work is dedicated to Late Shri B.R. Ghosh, DGM, MPA, VSSC who initiated and guided it.
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Gupta, R.K., Ramkumar, P. Microstructure Development in Gas Tungsten arc Welded Al Alloy AA2219. Trans Indian Inst Met 67, 589–594 (2014). https://doi.org/10.1007/s12666-013-0364-5
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DOI: https://doi.org/10.1007/s12666-013-0364-5