Microstructure Formation in Dissimilar Metal Welds: Electron Beam Welding of Ti/Ni

Chatterjee, Subhradeep; Abinandanan, T.A.; Reddy, G. Madhusudhan; Chattopadhyay, K.

doi:10.1007/s11661-015-3255-z

Cited by 14 publications

(2 citation statements)

References 35 publications

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“…Commercially pure titanium's (CpTi) exceptional biocompatibility, high specific strength, and corrosion resistance make it an attractive choice for applications in the biomedical engineering, aerospace and automobile industries [3,4]. However, the direct joining of Ti and Ni alloys is highly challenging due to the formation of brittle IMCs, cracks, and residual stresses in the weldments [5]. Some of the proposed solutions to prevent the formation of IMCs is by modifying the chemical composition of the weld zone and increasing the solidification rate [6].…”

Section: Introductionmentioning

confidence: 99%

Investigating the bonding mechanism of P-TIG welded CpTi/Inconel 718 dissimilar joint with Nb interlayer

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Investigating the bonding mechanism of P-TIG welded CpTi/Inconel 718 dissimilar joint with Nb interlayer

et al. 2022

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“…This is owing to the difference in physical and chemical properties of these alloys, resulting in degradation of mechanical properties of the joint. Chatterjee et al 13,14 investigated the microstructural features of a Ni/Ti dissimilar butt welded joint developed with a CO 2 laser and electron beam welding. They observed the presence of the brittle intermetallic compounds (IMCs), such as Ti 2 Ni and TiNi 3 in the welded joint, along with macroscopic cracks and macrosegregation.…”

Section: Introductionmentioning

confidence: 99%

Dissimilar P-TIG welding between Inconel 718 and commercially pure Titanium using niobium interlayer

Shehbaz

Junaid

Khan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The formation of brittle intermetallics is a challenge for the direct joining of commercially pure titanium (CpTi) and Inconel 718 (IN718) alloy. In the present work, dissimilar weldments using the P-TIG (Pulsed-Tungsten Inert Gas) welding technique were produced, with elemental Niobium (Nb) as an interlayer. The insertion of Nb acted as a barrier and suppressed the interdiffusion of Ti and Ni across the interlayer resulting in no TixNiy intermetallic compounds (IMCs) at the CpTi/IN718 dissimilar joint. Titanium (Ti) and Nb on CpTi side joined by solid solution (Ti, Nb) strengthening mechanism. Nickel (Ni) joined with Nb at IN718 side via eutectic reaction, where a diffused layer comprising of NbNi3, and Nb7Ni6 IMCs was found. Owing to the formation of brittle IMCs (NbNi3, Nb7Ni6), the diffused layer at Nb/IN718 interface exhibited the microhardness of ∼782 HV, which is ∼64% higher than the Nb/CpTi interface and considered highest in comparison to the other regions of the joint. The maximum tensile strength of the weldment was 150 MPa, which is significantly less than CpTi (360 MPa) and IN718 (850 MPa) base alloys possibly due to the presence of cracks in the diffused layer and the welded joint.

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Study on microstructure and corrosion resistance of Ti-doped nickel-based alloy coatings

Meng

Shi

Qiao

et al. 2022

J Solid State Electrochem

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Microstructure Formation in Dissimilar Metal Welds: Electron Beam Welding of Ti/Ni

Cited by 14 publications

References 35 publications

Investigating the bonding mechanism of P-TIG welded CpTi/Inconel 718 dissimilar joint with Nb interlayer

Investigating the bonding mechanism of P-TIG welded CpTi/Inconel 718 dissimilar joint with Nb interlayer

Dissimilar P-TIG welding between Inconel 718 and commercially pure Titanium using niobium interlayer

Study on microstructure and corrosion resistance of Ti-doped nickel-based alloy coatings

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