Dissimilar jointing of TA15 to Inconel718 by laser additive manufacturing using Nb/Cu bilayer

Shang, Chun; Wang, Chenyang; Xu, Guojian; Li, Changfu; Yang, Guang; You, Jinyuan

doi:10.1016/j.jmapro.2020.03.056

Cited by 19 publications

(7 citation statements)

References 39 publications

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“…According to Shang et al [31], the bonding region formed by titanium alloy and nickel-based contains many Ti-Ni IMCs, reaching a Vickers hardness of about 801.0 HV without the transition layer. In this work, the formation of the Ta/Cu transition region limited the direct bonding of TC4 with Inconel718, leading to a further reduction in the Ti-Ni IMCs.…”

Section: Vickers Hardness Of the Bimetallic Structurementioning

confidence: 99%

Ta/Cu transition region in TC4/Inconel718 bimetallic structure fabricated by laser deposition manufacturing

Wang

Xing

et al. 2023

Science and Technology of Welding and Joining

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The bimetallic structure formed by TC4 and Inconel718 has broad potential applications in aerospace. Based on the laser deposition manufacturing technique, a TC4/Inconel718 bimetallic structure was fabricated via the Ta/Cu transition layer. The test results indicated that a Ta/Cu transition region with a width of 475.0 μm was formed. The microstructure of the transition region changed from a reticular to a rod structure, and the corresponding phase compositions were β-Ta + Ti 2 Cu + TiCu and TiCu+γ -Cu + Cr 2 Ta. Owing to the formation of Ti-Cu and Cr-Ta phases in the transition region, the Vickers hardness reached 444.0 HV. The ultimate tensile strength was 280 MPa, and the fracture morphology presented a quasi-cleavage fracture, which occurred in the Ta/Cu transition region where Ti-Cu brittle phases exist.

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Section: Vickers Hardness Of the Bimetallic Structurementioning

confidence: 99%

Ta/Cu transition region in TC4/Inconel718 bimetallic structure fabricated by laser deposition manufacturing

Wang

Xing

et al. 2023

Science and Technology of Welding and Joining

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“…It can be more flexible and changeable to accurately control the deposition process and composition of each layer to achieve complex structural parts without metallurgical defects and high-quality manufacturing. LAM technology can realize the direct deposition manufacture of dissimilar materials, add transition layer connection and gradient transition connection, etc [21], which broadens the connection method of dissimilar materials and provides new possibilities for the connection of dissimilar materials. Up to now, there are many researches on the LAM technology of individual aluminum alloys or individual titanium alloys [22][23][24][25][26][27], but there are few research reports on the connection of titanium alloys and aluminum alloy dissimilar materials through the LAM technology.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of transition zone in laser additive manufacturing of TC4/AlSi12 bimetal structure

Jing

Liu²,

Wang

et al. 2022

Mater. Res. Express

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Ti/Al bimetallic structure (BS) has a good development prospect and broader application potential in aerospace engineering. Considering the limitation that dissimilar welding is only applicable to the thin plate, it is necessary to explore a new manufacturing process for Ti/Al BS. In this study, a TC4/AlSi12 BS was prepared by laser additive manufacturing (LAM). TC4 zone, AlSi12 zone and transition zone were formed in the LAM process. Due to the sufficient diffusion reaction, the transition zone with a width of about 0.8mm was obtained. At the same time, a few micro-cracks were found in the transition zone. The microstructure and phase composition of the transition zone had been emphatically studied. Research results showed that the presence of Si element made the phase composition of the transition zone more complicated. The structure evolution from TC4 to AlSi12 was: α-Ti → Ti3Al → TiAl+(TiAl+Si) → Ti5Si3 → TiAl3+(α-Al+Si) → α-Al+ Si +TiAl3 +(α-Al+Si) → α-Al+Si+(α-Al+Si). The hardness distribution of BS was uneven, with the highest value reaching 524HV. The tensile strength of the TC4/AlSi12 BS was about 110Mpa, and the fracture location was located in the transition zone.

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“…[5][6][7] Laser metal deposition (LMD), which is a method of building objects by adding layer-upon-layer of material on a base plate using laser to melt and deposit the powder, provides a possibility to manufacture bimetallic structures flexibly and effectively. 8,9 Three build strategies of direct deposition, compositional gradation and use of an intermediate bond layer were attempted by Onuike et al 10 to build Inconel 718 and Ti6Al4V bimetallic structures by laser engineered net shaping, but only the approach using an intermediate bond layer produced a crack-free structure. Shang et al 11 adopted Cu as the intermediate bond layer for laser deposition manufacturing of a TA15 and Inconel 718 bimetallic structure, and the results showed that the Cu interlayer can achieve a plastic transit between the two metals and eliminate cracks at the interfaces.…”

Section: Introductionmentioning

confidence: 99%

“…5–7 Laser metal deposition (LMD), which is a method of building objects by adding layer-upon-layer of material on a base plate using laser to melt and deposit the powder, provides a possibility to manufacture bimetallic structures flexibly and effectively. 8,9…”

Section: Introductionmentioning

confidence: 99%

TA15 and inconel 625 bimetallic structures additive manufacturing and phased array ultrasonic testing

Zhao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Additive manufacturing of bimetallic structures has become a hotspot in recent years. However, the interfaces of bimetallic structures are always the weaknesses, and cracks always occur at the interfaces. Three bimetallic samples of TA15 and Inconel 625 were manufactured by laser metal deposition, and the effect of laser power on the manufacturing quality was analyzed. Then phased array ultrasonic testing (PAUT) technique was applied for crack detection for the three samples, and metallographic analysis was employed to verify detection results. The results showed that the increase of laser power can eliminate macro-cracks at the interface of the bimetallic sample, and micro-cracks at the interface can be detected by PAUT.

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Dissimilar jointing of TA15 to Inconel718 by laser additive manufacturing using Nb/Cu bilayer

Cited by 19 publications

References 39 publications

Ta/Cu transition region in TC4/Inconel718 bimetallic structure fabricated by laser deposition manufacturing

Ta/Cu transition region in TC4/Inconel718 bimetallic structure fabricated by laser deposition manufacturing

Microstructure and mechanical properties of transition zone in laser additive manufacturing of TC4/AlSi12 bimetal structure

TA15 and inconel 625 bimetallic structures additive manufacturing and phased array ultrasonic testing

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