Tungsten foil laminate for structural divertor applications – Basics and outlook

Reiser, J.; Rieth, M.; Dafferner, B.; Hoffmann, Andreas

doi:10.1016/j.jnucmat.2012.01.010

Cited by 82 publications

(49 citation statements)

References 26 publications

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“…The strongest diffraction peaks in all of samples were that for W phase, which was related to the high W proportion in the composites (88% in mass fraction). The WeNi 50 Ti 50 sample contained not only B19'eNiTi phases but also brittle Ni 3 Ti phase. The diffraction peaks of B19'eNiTi phases were much weaker than those of Ni 3 Ti phase, which suggested that a large mount of Ni 3 Ti phase formed.…”

Section: Resultsmentioning

confidence: 99%

“…For Ti-rich alloys (around 50 at% Ni), stable Ti 2 Ni appears in NiTi alloy due to little solubility for Ti in excess of 50 at.% [28]. While for Ni-rich alloys, precipitation proceeds through a series of phases: Ti 3 Ni 4 /Ti 2 Ni 3 until finally the stable Ni 3 Ti phase is reached [28,29]. However, the change in the Ti/Ni ratio is inevitable because of mutual diffusion between NiTi and W [32].…”

Section: Introductionmentioning

confidence: 99%

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Fabrication, microstructure and mechanical properties of W NiTi composites

Shao

Guo

Huan

et al. 2017

Journal of Alloys and Compounds

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a b s t r a c tNew two-phase tungsten-based composites containing 88 wt% tungsten powders and 12 wt% nearly equiatomic NiTi alloy deforming by martensite variant detwinning were fabricated by infiltration and hot pressing in this study. 53 Nb 5 composite exhibited a double-yielding phenomenon under compression with an ultimate compressive strength of 3820 MPa and a deformation of 50.4%. In-situ synchrotron high-energy Xray diffraction measurements revealed the first yielding was caused by the martensite reorientation of the NiTi matrix and the second was due to the commencement of massive plastic deformation of the reoriented martensite and is also attributed to the microscopic internal fracturing of the W particles.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication, microstructure and mechanical properties of W NiTi composites

Shao

Guo

Huan

et al. 2017

Journal of Alloys and Compounds

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“…In this work, the synthesis of W laminate pipes is realized by brazing, [1,74] defined as the melting of the interlayer. The interlayers used are an eutectic silver copper …”

Section: Synthesis Of W Laminate Pipes and Connection To Steelmentioning

confidence: 99%

“…Through the synthesis of tungsten laminates made of W foils it is possible to expand the extraordinary properties of the foil to the bulk and to shift the BDT of up to 300°C to lower temperatures compared to pure tungsten plate material. [1] Furthermore, by rolling up and joining, a W laminate pipe can be produced that appears to be an interesting candidate for high temperature applications in the field of innovative energy conversion systems (Figure 1). …”

Section: Introductionmentioning

confidence: 99%

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Tungsten (W) Laminate Pipes for Innovative High Temperature Energy Conversion Systems

et al. 2014

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The aim of this paper is to present the mechanical properties of tungsten laminate pipes made of tungsten foil and to discuss their use in innovative high temperature energy conversion systems.Tungsten is the metal with the highest melting point of all metals and would therefore be an excellent fit for high temperature applications. But tungsten has one major drawback which is its low fracture toughness at room temperature (RT) or its high brittle-to-ductile transition 2 temperature (BDTT). However, one of the extraordinary properties of tungsten is that by cold working the BDTT can be shifted to lower temperatures. At the extreme, this results in a tungsten foil with a BDTT below -120°C combined with a RT fracture toughness of 70 MPa m 1/2 .By rolling up and joining a tungsten foil, tungsten laminate pipes can be synthesized that can dissipate at least 20 J in a Charpy impact test at RT and survive a burst test at RT at 1000 bar without any residual damage. The technical maturity of these W laminate pipes is approved by high heat flux tests performed at the Plataforma Solar de Almería, Spain, as well as at the

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Refractory Materials for Energy Applications

et al. 2017

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The most extensively used refractory metals are tungsten, tantalum, niobium, rhenium, unalloyed molybdenum and its principal alloy, TZM. All of them are characterised by their extremely high melting point above 2000 °C (2273 K) and high hardness at room temperature. They are used in demanding applications that require high‐temperature strength and corrosion resistance, for example, wire filaments, casting moulds and chemical reaction vessels in corrosive environments. This contribution is focused on tungsten and new tungsten materials. The intrinsic problems of these materials, that is, their brittleness (even at elevated temperatures), thermal load capacity, heat conductivity, recrystallization, irradiation damage and specific defect processes, such as helium bubbles, swelling, new kinds of surface reactions, crack formation, brittle‐to‐ductile transition and tritium retention, require the development and assessment of new tungsten materials, and also new fabrication routes and processes.

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Tungsten foil laminate for structural divertor applications – Basics and outlook

Cited by 82 publications

References 26 publications

Fabrication, microstructure and mechanical properties of W NiTi composites

Fabrication, microstructure and mechanical properties of W NiTi composites

Tungsten (W) Laminate Pipes for Innovative High Temperature Energy Conversion Systems

Refractory Materials for Energy Applications

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