Fabrication of W/steel joint using hot isostatic pressing with Ti/Cu/Ti liquid forming interlayer

Liu, Wensheng; Pang, Xinkuan; Cai, Qingshan; Ma, Yunzhu; Zhu, Wentan

doi:10.1016/j.fusengdes.2018.07.013

Cited by 16 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liu W. et al [19] carried out contact-reactive brazing: W/Ti/Cu/Ti/steel Fe-17Cr-0.1C wt.% steel under hot isostatic pressing at 100 MPa. The hot isostatic pressing experiment was carried out at 1050 • C for 60 min.…”

Section: The Latest Progress Made In Tungsten/steel Brazingmentioning

confidence: 99%

“…Thus, Fe-based and Ti-based brazing alloys with added melting-point depressants (B, Be, Si) could prospectively aid in the joining of tungsten to RAFM steel. Summarizing the review above, only a few joints can endure the stresses calculated in Section 2.3: [15,18,19,33,38,46]. The highest strength relates to the joints brazed by pure copper.…”

Section: Brazingmentioning

confidence: 99%

“…Therefore, this technology is used in the assembly of ITER components and is currently actively investigated with a view to its use in DEMO production. Meanwhile, a compensating interlayer is usually used [12,18,19] to reduce the residual stresses arising from differences in CTE. In this case, the development of brazing alloys suitable for two seams (tungsten/interlayer and interlayer/steel) is required.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Overview of the Mechanical Properties of Tungsten/Steel Brazed Joints for the DEMO Fusion Reactor

Bachurina

Vorkel

Сучков

et al. 2021

Metals

View full text Add to dashboard Cite

A Demonstration (DEMO) thermonuclear reactor is the next step after the International Thermonuclear Experimental Reactor (ITER). Designs for a DEMO divertor and the First Wall require the joining of tungsten to steel; this is a difficult task, however, because of the metals’ physical properties and necessary operating conditions. Brazing is a prospective technology that could be used to solve this problem. This work examines a state-of-the-art solution to the problem of joining tungsten to steel by brazing, in order to summarize best practices, identify shortcomings, and clarify mechanical property requirements. Here, we outline the ways in which brazing technology can be developed to join tungsten to steel for use in a DEMO application.

show abstract

Section: The Latest Progress Made In Tungsten/steel Brazingmentioning

confidence: 99%

Section: Brazingmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Overview of the Mechanical Properties of Tungsten/Steel Brazed Joints for the DEMO Fusion Reactor

Bachurina

Vorkel

Сучков

et al. 2021

Metals

View full text Add to dashboard Cite

show abstract

“…Usually, intermediate layers are used to suppress a mismatch of CTE [9]. In DEMO, in order to relieve these stresses, it is proposed to use Nb [10], V [11], Ti [12], Cu [13], and Ta [14].…”

Section: Introductionmentioning

confidence: 99%

Brazing Tungsten/Tantalum/RAFM Steel Joint for DEMO by Fully Reduced Activation Brazing Alloy 48Ti-48Zr-4Be

Bachurina

Сучков

Gurova

et al. 2021

Metals

View full text Add to dashboard Cite

To create a DEMO reactor, it is necessary to develop high-quality technology to join tungsten with reduced-activation ferritic-martensitic (RAFM) steel (Rusfer, Eurofer, CLF-1, etc.). Difficulties arise in their direct connection due to the large difference in the coefficient of thermal expansion (CTE). To suppress the difference of CTE, intermediate interlayers are usually used, such as vanadium or tantalum, and brazing is a prospective technology to conduct the joining. The vast majority of works represent copper- or nickel-based brazing alloys, but their applicability is under significant discussion due to their activation properties. That is why, in this work, fully reduced activation 48Ti-48Zr-4Be wt.% brazing alloy was used. The following joint was made: Rusfer steel/48Ti-48Zr-4Be/Ta/48Ti-48Zr-4Be/W. The brazing was successfully carried out under a mode providing thermal heat treatment of Rusfer. Through EDS and EBSD analysis, the microstructure of the joint was determined. Shear strength of the as-joined composition was measured as 127 ± 20 MPa. The joint endured 200 thermocycles in the temperature range between 300–600 °C, but the fillet regions degraded.

show abstract

“…The joining of W and RAFMs has been realised mainly by brazing [13][14][15][16][17][18][19][20][21][22][23][24][25]45,46] and solid-state diffusion bonding [16,17,[26][27][28][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. Brazing is suitable for joining components with complex geometries.…”

Section: Introductionmentioning

confidence: 99%

Tungsten/reduced activation ferritic–martensitic steel joints made with an Fe–Si–B amorphous filler

Wang

Lian

Feng

et al. 2021

Materials Science and Technology

View full text Add to dashboard Cite

The joining of Tungsten (W) and reduced activation ferritic–martensitic steel (RAFMs) is crucial to the fabrication of divertors in future fusion reactors. In this work, an Fe75.0Si8.33B16.67 (at.-%) amorphous filler and iron interlayer are considered for brazing W and RAFMs. Crack-free joints in both the as-brazed and post joining heat treatment (PJHT) states have been obtained by short-time vacuum brazing at 1230°C. The bonding seams of the joints are composed of an α-Fe matrix, fine FeWB and Fe3B particles. The PJHT joint exhibits a high strength of 310 MPa and room temperature plasticity. The strong and tough joint would be appealing in its thermal cycling and thermal shock performance.

show abstract

Fabrication of W/steel joint using hot isostatic pressing with Ti/Cu/Ti liquid forming interlayer

Cited by 16 publications

References 23 publications

Overview of the Mechanical Properties of Tungsten/Steel Brazed Joints for the DEMO Fusion Reactor

Overview of the Mechanical Properties of Tungsten/Steel Brazed Joints for the DEMO Fusion Reactor

Brazing Tungsten/Tantalum/RAFM Steel Joint for DEMO by Fully Reduced Activation Brazing Alloy 48Ti-48Zr-4Be

Tungsten/reduced activation ferritic–martensitic steel joints made with an Fe–Si–B amorphous filler

Contact Info

Product

Resources

About