Abstract
In this study, the hot cracking susceptibility of B206 aluminum (Al) alloy during TIG welding was investigated using the moving torch Varestraint test method. B206 Al alloy billets were cast with and without the addition of titanium-based grain refiner. The billets were then machined to 3mm thick plates and tested. In all, two levels of titanium (i.e. 0.02 and 0.05 wt%) were used. The results suggest that addition of titanium significantly reduced the hot cracking susceptibility in B206. This was attributed to a finer and more equiaxed grain structure throughout the welding regions. In addition, residual stress measurements (carried out using neutron diffraction) showed that the cracked sample contained a lower magnitude of stress as a result of relief from cracking, while a crack-free sample was found to have relatively higher magnitude of residual stress, since the stress remained ‘locked-in’ to resist the formation of hot cracks.
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References
G.K. Sigworth and F. De Hart, “Recent Developments in the High Strength Aluminum Casting Alloys A206”, AFS Transactions, 111 (2003), 341–354.
J. Lippold et al., eds., Hot Cracking Phenomena in Welds III (Berlin Heidelberg: Springer-Verlag, 2011), 3–23.
S. Kou, “Solidification and Liquation Cracking Issues in Welding”, Journal of Metals, June 2003, 37–42.
F. D’Elia and C. Ravindran, “Effect of Ti-B Grain Refiner on Hot Tearing in Permanent Mold Cast B206 Aluminum Alloy”, AFS Transactions, 117 (2009), 139–148.
M. Bracinni, M. Suéry and M. Stucky, “Influence of grain refinement on hot-cracking in aluminum-copper alloys”, Fonderie Fondeur d’aujourd’hui, 208 (2001), 12–23.
F. D’Elia and C. Ravindran, “Influence of Grain Refinement on Hot Tearing in B206 and A319 Aluminum Alloys”, Trans. Indian Institute of Metals, 62 (4–5) (2009), 315–319.
F. D’Elia, C. Ravindran and D. Sediako, “Effect of Grain Refinement on Residual Strain and Hot Tearing in B206 Aluminum Alloy” Advanced Materials Research, 409 (2012), 35–40.
C.D. Lundin, A.C. Lingenfelter, G.E. Grotke, G.G. Lessmann and S.J. Matthews, “The Varestraint Test”, Welding Research Council, 1982, no. 280:1–19.
S.A. Metz and M.C. Flemings, “A Fundamental Study of Hot Tearing”, AFS Transactions, 78 (1970), 453–460.
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© 2014 TMS (The Minerals, Metals & Materials Society)
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D’Elia, F., Lombardi, A., Ravindran, C., Sediako, D., Rao, K.P. (2014). Assessment of Hot Cracking During Tig Welding of B206 Aluminum Alloy. In: Grandfield, J. (eds) Light Metals 2014. Springer, Cham. https://doi.org/10.1007/978-3-319-48144-9_34
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DOI: https://doi.org/10.1007/978-3-319-48144-9_34
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48590-4
Online ISBN: 978-3-319-48144-9
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