Abstract
One of the main problems in the application of aluminum alloys combined with new lightweight constructional techniques is presented by the difficulties during welding of these materials. The matters propounded for solution when welding these alloys are: weld porosity, alloying element segregation, depletion of elements, e.g. lithium and magnesium, from the melted material (due to both: vaporization and oxidation processes) as well as the tendency to produce centerline weld cracks [1]. In addition, when during welding the metal adjacent to the weld is heated, the high temperature zone is solution treated, eliminating the effects of age hardening. If the solution-treated zone cools slowly, stable δ, T and Θ phases may precipitate at the grain boundaries, embrittling the weld area.
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Kusiński, J., Twardowska, A. (1998). Microstructure and Mechanical Properties of Laser Welded and Aged AL-Li-Zr Alloys. In: Ciach, R. (eds) Advanced Light Alloys and Composites. NATO ASI Series, vol 59. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9068-6_35
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DOI: https://doi.org/10.1007/978-94-015-9068-6_35
Publisher Name: Springer, Dordrecht
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