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Physics of Metals and Metallography

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01.05.2020 | STRENGTH AND PLASTICITY

Microstructure Evolution and Mechanical Properties of 2219 Aluminum Alloy A–TIG Welds

verfasst von: E. Ahmadi, A. R. Ebrahimi, A. Hoseinzadeh

Erschienen in: Physics of Metals and Metallography | Ausgabe 5/2020

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Abstract

The effects of three activating fluxes, SiO₂, TiO₂, and MoO₃, in tungsten inert gas (TIG) welding process on penetration, morphology, and mechanical properties of weld joint were investigated by bead on plate welding on 2219 aluminum alloy. Experimental results showed that a noticeable increase in the weld penetration and depth to with ratio was obtained by using activating fluxes. Among all the activating fluxes used in this study, the maximum penetration was achieved in case of SiO₂ flux. The microstructure analysis demonstrated that oxide fluxes can promote transition from columnar to equiaxed grain growth in the fusion zone. It is also found that A–TIG weldments exhibit superior mechanical properties including tensile strength and hardness than those of TIG welding without flux.

Vorheriger Artikel Comparative Analysis of Structure and Properties of Quasibinary Al–6.5Cu–2.3Y and Al–6Cu–4.05Er Alloys

Nächster Artikel Effect of Multidirectional Forging on the Microstructure and Mechanical Properties of the Al–Mg–Mn–Cr Alloy

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Titel: Microstructure Evolution and Mechanical Properties of 2219 Aluminum Alloy A–TIG Welds
verfasst von: E. Ahmadi
A. R. Ebrahimi
A. Hoseinzadeh
Publikationsdatum: 01.05.2020
Verlag: Pleiades Publishing
Erschienen in: Physics of Metals and Metallography / Ausgabe 5/2020
Print ISSN: 0031-918X
Elektronische ISSN: 1555-6190
DOI: https://doi.org/10.1134/S0031918X20050026

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