Stable bonding of W and ODS steel fabricated by TLP diffusion technology through inserting a novel composite interlayer Zr/Cu

Zhang, Jingwen; Yu, Liming; Liu, Yongchang; Liu, Chenxi; Ma, Zongqing; Li, Huijun; Wang, Zumin; Long, Dijun

doi:10.1016/j.jmatprotec.2021.117341

Cited by 19 publications

(4 citation statements)

References 21 publications

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“…Interlayers are used in diffusion bonding to reduce chemical heterogeneity and thermodynamic instability in the transition zone of the joint, as well as to prevent or restrict the effects of temperature deformation considerably while joining dissimilar metals. The interdiffusion that occurs between the interlayer and the base metal makes the TLP bonding technique effective for joining dissimilar metals with a large difference in thermal properties. − …”

Section: Introductionmentioning

confidence: 99%

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Impact of Bonding Temperature on Microstructure, Mechanical, and Fracture Behaviors of TLP Bonded Joints of Al2219 with a Cu Interlayer

Vatnalmath,

Auradi,

et al. 2023

ACS Omega

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The present study aims at producing transient liquid phase (TLP) bonded Al2219 joints with pure Cu (copper) as an interlayer. The TLP bonding is carried out at the bonding temperatures in the range of 480 to 520 °C while keeping the bonding pressure (2 MPa) and time (30 min.) constant. Reaction layers are formed at the Al-Cu interface with a significant increase in diffusion depth with the increase in the bonding temperature. The microstructural investigations are carried out using scanning electron microscopy and energy-dispersive spectroscopy. X-ray diffraction study confirms the formation of CuAl2, CuAl, and Cu9Al4 intermetallic compounds across the interface of the bonded specimens. An increase in microhardness is observed across the bonding zone with the increase in the bonding temperature, and a maximum hardness value of 723 Hv is obtained on the diffusion zone of the specimen bonded at 520 °C. Furthermore, the fractography study of the bonded specimens is carried out, and a maximum shear strength of 18.75 MPa is observed on the joints produced at 520 °C.

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Section: Introductionmentioning

confidence: 99%

“…The interdiffusion that occurs between the interlayer and the base metal makes the TLP bonding technique effective for joining dissimilar metals with a large difference in thermal properties. 16 − 24 …”

Section: Introductionmentioning

confidence: 99%

Impact of Bonding Temperature on Microstructure, Mechanical, and Fracture Behaviors of TLP Bonded Joints of Al2219 with a Cu Interlayer

Vatnalmath,

Auradi,

et al. 2023

ACS Omega

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“…Other welding methods, such as brazing, have the main disadvantage of low upper operating temperature of the joint owing to the low melting point of the brazing alloy [14]. For transient liquid phase bonding, the introduction of an interlayer leads to non-homogeneous joints [15]. Considering the highly concentrated heat input minimises the melting of the material compared to traditional fusion welding, partial authors explored the high-energy beam welding, such as laser beam welding [16] and electron beam welding [17], but the results showed that ODS steel still presented a certain degree of deterioration.…”

Section: Introductionmentioning

confidence: 99%

Investigation on microstructure and tensile shear properties of 9Cr oxide dispersion strengthened steel resistance spot welded joint

Jia

Wei

2023

Science and Technology of Welding and Joining

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Resistance spot welding is employed to join the 9Cr oxide dispersion strengthened steel and the effects of different welding parameters are studied. Within the ranges of parameters used in this experiment, the failure load and energy increased from 4.3 kN, 1.0 J to 6.8 kN, 7.5 J as the welding current increased, while as the electrode force increased, the failure load and energy first decreased from 6.8 kN, 3.8 J to nearly 4 kN, 1.2 J, then remained stable. As the welding current exceeded 12.8 kA, the failure mode changed from pull out failure along the fusion line to the pull out failure along the fusion line partially and base metal partially. The welding current and electrode force strongly affect the mechanical properties and fracture mode of the joint.

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“…The huge thermal and neutron loads faced by plasma facing components (PFC) represent a major challenge for next generation fusion devices, as both lead to degradation of physical and mechanical properties. Currently, tungsten (W) [1][2][3] as a component (which serves as a plasma facing material) connected to steels [4][5][6] (which are functionalised as the heat sink material) has been considered as one of the most promising PFC. The W block is expected to prevent sputtering and erosion because of its high melting point, good thermal conductivity, and low erosion rate, whereas the steels with cooling ducts serve as a reliable structural material owing to their good thermo-physical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Performance and evolution of W/steel joint fabricated by selective laser melting

Chen

Qiu

et al. 2022

Science and Technology of Welding and Joining

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Herein, attempts were made to develop W/steel joints via selective laser melting (SLM) for the first time. The influence of processing parameters on the joint strength was investigated. To further improve the mechanical properties, we performed post-heat treatment on the asfabricated specimens. The results showed that large amounts of solid solution and dispersed micro-/nanoparticles appear in the interface of W/steel joints fabricated by direct SLM because of the uniqueness of non-equilibrium solidification, which is favourable for the bonding properties. However, the solid solution gradually transforms into the Fe 2 W(Ni, Cr) phase encapsulated with W particles during heat treatment, while the Fe 7 W 6 phase fills the poles at the W/steel interface, which is extremely detrimental to the bonding properties.

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Stable bonding of W and ODS steel fabricated by TLP diffusion technology through inserting a novel composite interlayer Zr/Cu

Cited by 19 publications

References 21 publications

Impact of Bonding Temperature on Microstructure, Mechanical, and Fracture Behaviors of TLP Bonded Joints of Al2219 with a Cu Interlayer

Impact of Bonding Temperature on Microstructure, Mechanical, and Fracture Behaviors of TLP Bonded Joints of Al2219 with a Cu Interlayer

Investigation on microstructure and tensile shear properties of 9Cr oxide dispersion strengthened steel resistance spot welded joint

Performance and evolution of W/steel joint fabricated by selective laser melting

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