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2020 | OriginalPaper | Buchkapitel

A Review on the Challenges in Welding of Aluminium AA2219 Alloy

verfasst von : M. A. Trishul, Bijayani Panda

Erschienen in: Advances in Lightweight Materials and Structures

Verlag: Springer Singapore

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Abstract

Al–Cu (2000 series) alloys are used for applications which require higher damage tolerance and fatigue resistance. Aluminium alloy AA2219 has superior weldability because of its low sensitivity to hot cracking. However, it suffers from poor strength at weld joint. The reduction in strength is because of melting and solidification of the alloy, which results in the dissolution of the strengthening precipitates and formation of large columnar grains. Also, due to the rapid melting and solidification process, the originally present precipitates may not dissolve completely. In such cases, the weld region may show small number of coarse precipitates, widely distributed. The segregation of Cu at grain and dendritic boundaries results in depletion of Cu at the grain interiors, resulting in a decrease in mechanical properties. The present paper reviews such kind of challenges faced during welding of aluminium alloy AA2219. Various methods like post-weld heat treatment (PWHT), weld pool agitation, pulsed current, magnetic arc oscillation, friction stir welding (FSW) and electron beam welding (EBW) are discussed.

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Titel: A Review on the Challenges in Welding of Aluminium AA2219 Alloy
verfasst von: M. A. Trishul
Bijayani Panda
Verlag: Springer Singapore
Buch: Advances in Lightweight Materials and Structures
Print ISBN: 978-981-15-7826-7

Electronic ISBN: 978-981-15-7827-4

Copyright-Jahr: 2020
DOI: https://doi.org/10.1007/978-981-15-7827-4_68

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