Mechanical and microstructural characteristics of Ti6Al4V/AA2519 and Ti6Al4V/AA1050/AA2519 laminates manufactured by explosive welding

Piotr Bazarnik , Bogusława Adamczyk-Cieślak , Aleksander Gałka , Bartosz Płonka , Lucjan Śnieżek , Cantoni Marco , Małgorzata Lewandowska

Abstract

The aim of the work was to produce laminated structures consisting of Ti–6Al–4V alloy and AA2519 plates and to investigate their microstructure and mechanical properties with an emphasis on the role of an additional AA1050 interlayer. Explosive welding was selected as a joining technology. The microstructure and chemical composition of the explosively joined samples were investigated. Mechanical properties were evaluated in the tensile testing and by microhardness analysis. The results demonstrated that explosive welding is an effective way to produce Ti/Al laminates. Both Ti6Al4V/AA2519 and Ti6Al4V/AA1050/AA2519 laminated plates exhibit good quality of bonding without voids and major delamination. The explosive welding produced metallurgical bonding with a nanostructured zone consisting of Al3Ti and Al2Ti phases. This zone is thicker in the joint with additional AA1050 interlayer when compared to direct AA2519/Ti6Al4V bonding. In the latter, SEM and STEM analysis reviled the presence of net-like structure in the collision zone. Advanced EDX analysis shows the enrichment of grain boundaries in copper. The formation of this structure is widely discussed. In addition, the explosive welding introduces large plastic deformation which induces the process of grain refinement in aluminium plates. Tensile testing confirms that joining section is not the weakest element of the cladded plates.
Author Piotr Bazarnik ZPM
Piotr Bazarnik,,
- Division of Materials Design
, Bogusława Adamczyk-Cieślak ZPM
Bogusława Adamczyk-Cieślak,,
- Division of Materials Design
, Aleksander Gałka
Aleksander Gałka,,
-
, Bartosz Płonka - Instytut Metali Nieżelaznych (IMN)
Bartosz Płonka,,
-
, Lucjan Śnieżek - Wojskowa Akademia Techniczna (WAT)
Lucjan Śnieżek,,
-
, Cantoni Marco - EPFL-CIME
Cantoni Marco,,
-
, Małgorzata Lewandowska ZPM
Małgorzata Lewandowska,,
- Division of Materials Design
Journal seriesMaterials & Design, ISSN 0264-1275 [0261-3069]
Issue year2016
Vol111
No5
Pages146-157
Publication size in sheets0.55
Keywords in EnglishExplosive welding; Interface; Aluminium alloys; Ti6Al4V; Microstructure; Chemical analysis
URL http://dx.doi.org/10.1016/j.matdes.2016.08.088
Languageen angielski
File
Mechanical and microstructural characteristics of Ti6Al4VAA2519 and.pdf 6.79 MB
Score (nominal)35
ScoreMinisterial score = 35.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.364 (2) - 2016=4.498 (5)
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