Laser welding of Ti6Al4V to Cu using a niobium interlayer

[Display omitted] A hybrid joint with the Nb interlayer consisting of two metallurgical joining interfaces was obtained by the laser welding induced brazing method. The fusion zone comprising the Ti-based and Nb-based solid solutions formed at the Ti6Al4V/Nb interface, while the diffusion bonding la...

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Published in:Journal of materials processing technology 2019-08, Vol.270, p.293-305
Main Authors: Gao, Xiao-Long, Liu, Huan, Liu, Jing, Yu, Haokui
Format: Article
Language:English
Subjects:
Copper
Diffusion layers
Ductile fracture
Interlayers
Laser beam welding
Laser welding
Metallurgy
Niobium
Niobium interlayer
Solid solutions
Ti6Al4V
Titanium base alloys
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cited_by cdi_FETCH-LOGICAL-c346t-b10591b8b7e0f67e8e87f6d786167a3ae2bf0259d7e5753d68c52659558735c3
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container_title Journal of materials processing technology
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creator Gao, Xiao-Long
Liu, Huan
Liu, Jing
Yu, Haokui
description [Display omitted] A hybrid joint with the Nb interlayer consisting of two metallurgical joining interfaces was obtained by the laser welding induced brazing method. The fusion zone comprising the Ti-based and Nb-based solid solutions formed at the Ti6Al4V/Nb interface, while the diffusion bonding layer comprising the Cu-based and Nb-based solid solutions formed at the Nb/Cu interface. The use of niobium interlayer successfully prevented the mixing of Ti and Cu in the molten pool to avoid the formation of TixCuy brittle phases. The tensile strength of the Ti6Al4V/Cu joints with the Nb interlayer increased to 225 MPa, and the joints exhibited the ductile fracture. The fracture region formed at the Cu side near the Nb/Cu interface.
doi_str_mv 10.1016/j.jmatprotec.2019.03.005
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The fusion zone comprising the Ti-based and Nb-based solid solutions formed at the Ti6Al4V/Nb interface, while the diffusion bonding layer comprising the Cu-based and Nb-based solid solutions formed at the Nb/Cu interface. The use of niobium interlayer successfully prevented the mixing of Ti and Cu in the molten pool to avoid the formation of TixCuy brittle phases. The tensile strength of the Ti6Al4V/Cu joints with the Nb interlayer increased to 225 MPa, and the joints exhibited the ductile fracture. 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subjects Copper
Diffusion layers
Ductile fracture
Interlayers
Laser beam welding
Laser welding
Metallurgy
Niobium
Niobium interlayer
Solid solutions
Ti6Al4V
Titanium base alloys
title Laser welding of Ti6Al4V to Cu using a niobium interlayer
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