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Effect of explosive mixture on quality of explosive welds of copper to aluminium

2016-04-05Journal article Restricted access
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dc.contributor.authorLoureiro, A.
dc.contributor.authorMendes, R.
dc.contributor.authorRibeiro, J. B.
dc.contributor.authorLeal, R. M.
dc.contributor.authorGalvão, Ivan
dc.date.accessioned2016-06-30T15:11:15Z
dc.date.available2016-06-30T15:11:15Z
dc.date.issued2016-04-05
dc.description.abstractThe aim of this research is to investigate the influence of explosive ratio and type of sensitizer on the quality of explosive welds between copper and aluminium alloy plates. The welds were performed on a partially overlapping joint configuration using an emulsion explosive (EE) with two different sensitizers, hollow glass microspheres (HGMS) and expanded polystyrene spheres (EPS). Welds with an improved surface were achieved by using the HGMS sensitizer. A higher wave amplitude was registered in welds produced with the EPS sensitizer. In turn, the dimension of the molten pockets was influenced by the explosive ratio, increasing in size with increases in the values of this parameter. The intermetallic content of these zones varied according to the sensitizer type. Unlike the CuAl2 phase, the Cu-richer phases CuAl and Cu9Al4 were only identified in welds performed using the EPS sensitizer. An increase in hardness was observed at the interface of all welds, which resulted from both the presence of intermetallic phases and the plastic deformation of the materials promoted by the impact. This effect was most evident on the aluminium alloy side. All the welds had a greater strength than copper, i.e. the weakest material of the joint. (C) 2016 Elsevier Ltd. All rights reserved.pt_PT
dc.identifier.citationLOUREIRO, A.; [et al.] - Effect of explosive mixture on quality of explosive welds of copper to aluminium. Materials & Design. ISSN 0261-3069. Vol. 95 (2016), pp. 256-267pt_PT
dc.identifier.doi10.1016/j.matdes.2016.01.116pt_PT
dc.identifier.issn0261-3069
dc.identifier.issn0261-3069
dc.identifier.urihttp://hdl.handle.net/10400.21/6275
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier SCI Ltdpt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0264127516301174pt_PT
dc.subjectExplosive weldingpt_PT
dc.subjectExplosive ratiopt_PT
dc.subjectExplosive sensitizerspt_PT
dc.subjectWeld morphologypt_PT
dc.subjectIntermetallic phasespt_PT
dc.subjectTensile-shear strengthpt_PT
dc.titleEffect of explosive mixture on quality of explosive welds of copper to aluminiumpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage267pt_PT
oaire.citation.startPage256pt_PT
oaire.citation.volume95pt_PT
person.familyNameGalvão
person.givenNameIvan
person.identifier.ciencia-id581F-44DA-F99D
person.identifier.orcid0000-0002-2580-7148
person.identifier.scopus-author-id36650802900
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication77ad7655-2d94-49a7-ad9c-d15ba261a88f
relation.isAuthorOfPublication.latestForDiscovery77ad7655-2d94-49a7-ad9c-d15ba261a88f

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