Special features of resistance welding aluminium alloys using nanostructured aluminium–nickel and aluminium–copper foils

Kuchuk-Yatsenko, V. S.; Швец, В. И.; Sakhatskii, A.G.; Nakonechnyi, A. A.

doi:10.1080/09507110802383261

Welding International

2008

DOI: 10.1080/09507110802383261

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Special features of resistance welding aluminium alloys using nanostructured aluminium–nickel and aluminium–copper foils

V. S. Kuchuk-Yatsenko

В. И. Швец

A.G. Sakhatskii

et al.

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Cited by 5 publications

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“…The macrostructure of the welded joint was stable. The best results were obtained when using the foil with a thickness of 60-100 mm, and in welding using the foils thicker than 150 mm it was necessary to use 'hard' welding conditions 10,11 .…”

mentioning

confidence: 96%

Nanotechnologies and nanomaterials in welding production (review)

Kuznetsov

Zernin

2012

Welding International

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mentioning

confidence: 96%

Nanotechnologies and nanomaterials in welding production (review)

Kuznetsov

Zernin

2012

Welding International

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“…This reduces the welding time, the size of the flash and the HAZ, welding temperature, and the macrostructure of the welded joint is stable. The best results are obtained using foils with a thickness of 60 -100 mm, and when using foils thicker than 150 mm it is necessary to apply 'harder' welding conditions [10,11].…”

mentioning

confidence: 96%

Nanotechnologies and nanomaterials in welding production (review)

Kuznetsov

Zernin

2012

Welding International

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“…Such pressure welding processes include resistance butt welding (RBW). In [20] joint formation at RBW of Ti-47Al-1.5Cr-2Nb alloy produced by electron beam remelting technology was studied. It is found that application of NF of Ti/Al system allowed an essential improvement of joint formation, reducing sample upset value and RBW process duration.…”

mentioning

confidence: 99%

Structure of gamma-tial joints in resistance butt welding with application of interlayers

Kuchuk-Yatsenko¹,

Zyakhor²,

Chernobaj³

et al. 2015

The Paton Welding J.

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The paper deals with the features of producing joints of an alloy based on γ-TiAl intermetallics at resistance butt welding with application of interlayers in the form of foil, differing by thickness, composition and structural state. Investigations were performed on samples of Ti-47Al-2Cr-2Nb (at.%) alloy, produced by electron beam remelting, both in as-delivered (cast) condition, and after heat treatment (1250 °C, 6 h). Used as interlayer was titanium foil with microcrystalline structure 100, 200 and 400 μm thick, and nanostructured multilayered foils Ti/Al (52Ti-48Al, at.%) and Ti/Co (75Ti-25Co, at.%) of 30-160 μm thickness. Experiments were performed in K802 system, welding mode parameters were varied in the following ranges: 5-20 MPa pressure at heating, 20-100 MPa upset pressure, hand 5-15 mm upset value. Joint microstructure and composition were studied by optical and scanning electron microscopy and X-ray microprobe analysis. Metal strength properties in the joint zone were assessed by microhardness distribution and rupture testing. It is established that the zone of Ti-47Al-2Cr-2Nb alloy joints made with application of solid titanium foil demonstrates structural inhomogeneity in the form of a continuous titanium interlayer and diffusion zone between the interlayer and alloy being welded, containing linear porosity. Application of nanostructured Ti/Al and Ti/Co foils ensures formation of defect-free joints. Metal structure in the joint zone is fine-grained bimodal γ/γ + α2, irrespective of base metal initial structure. Remains of nanostructured foils of Ti/Al system are present in the joint zone in the form of an interlayer of dispersed γ-TiAl intermetallic, not containing any chromium or niobium. At application of foil of Ti/Co system of eutectic composition, no chemical inhomogeneity in the form of foil transformation products is found in the butt. At rupture testing of the joints, fracture runs through the base metal of Ti-47Al-2Cr-2Nb alloy. Joint region of higher hardness in all the considered cases coincides with the zone of structural changes resulting from thermodeformational impact of the welding process. 21 Ref., 11 Figures.

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Special features of resistance welding aluminium alloys using nanostructured aluminium–nickel and aluminium–copper foils

Cited by 5 publications

References 0 publications

Nanotechnologies and nanomaterials in welding production (review)

Nanotechnologies and nanomaterials in welding production (review)

Nanotechnologies and nanomaterials in welding production (review)

Structure of gamma-tial joints in resistance butt welding with application of interlayers

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