Plasma facing component with built-in tungsten wires and a W-Cu functionally graded layer: A finite element assessment

Sun, Dan; Wang, Yuanyuan; Huang, Shaosong; Zhao, Jijun; Liu, Guanghua; Li, Jiangtao

doi:10.1016/j.fusengdes.2017.05.006

Fusion Engineering and Design

2017

DOI: 10.1016/j.fusengdes.2017.05.006

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Plasma facing component with built-in tungsten wires and a W-Cu functionally graded layer: A finite element assessment

Dan Sun

Yuanyuan Wang

Shaosong Huang

et al.

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Cited by 9 publications

References 31 publications

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Micro-Mechanical Fracture Investigations on Grain Size Tailored Tungsten-Copper Nanocomposites

Schmuck,

Burtscher,

Alfreider

et al. 2024

JOM

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Tungsten-copper composites are used in harsh environments because of their superior material properties. This work addresses a tungsten-copper composite made of 20 wt.% copper, which was subjected to grain refinement by high-pressure torsion, whereby the deformation temperature was varied between room temperature and 400 °C to tailor the grain size. Deformation was performed up to microstructural saturation and verified by hardness measurement and scanning electron microscopy. From the refined nanostructured material, micro-cantilever bending beams with cross-sections spanning from 5 × 5 to 35 × 35 µm2 were cut to examine possible size effects and the grain size influence on the fracture behavior. Fracture experiments were performed in situ inside a scanning electron microscope by applying a quasi-static loading protocol with partial unloading steps. Inspection of the fracture surfaces showed that all cantilevers failed in an inter-crystalline fashion. Nevertheless, remaining coarser tungsten grains impacted the resultant fracture toughness and morphology. Cantilevers fabricated from the 400 °C specimen exhibited a fracture toughness of 220 $$\pm $$ ± 50 $$\frac{{\text{J}}}{{{\text{m}}}^{2}}$$ J m 2 . For the room temperature cantilevers, a fracture toughness of 410 $$\pm $$ ± 50 $$\frac{{\text{J}}}{{{\text{m}}}^{2}}$$ J m 2 was observed, which declined to 340 $$\pm $$ ± 30 $$\frac{{\text{J}}}{{{\text{m}}}^{2}}$$ J m 2 for cantilevers < 10 × 10 µm2, confirming a size effect. The increased fracture toughness is attributed to the delamination-like structures formed in the room temperature sample.

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Micro-Mechanical Fracture Investigations on Grain Size Tailored Tungsten-Copper Nanocomposites

Schmuck,

Burtscher,

Alfreider

et al. 2024

JOM

View full text Add to dashboard Cite

show abstract

Experimental and numerical studies on W–Cu functionally graded materials produced by explosive compaction–welding sintering

Chen

Sun

et al. 2018

Fusion Engineering and Design

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Achieving high-strength W/W-10Cu joints by vacuum diffusion bonding with FeCoCu interlayer

Wei

Zhou

et al. 2023

Fusion Engineering and Design

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Plasma facing component with built-in tungsten wires and a W-Cu functionally graded layer: A finite element assessment

Cited by 9 publications

References 31 publications

Micro-Mechanical Fracture Investigations on Grain Size Tailored Tungsten-Copper Nanocomposites

Micro-Mechanical Fracture Investigations on Grain Size Tailored Tungsten-Copper Nanocomposites

Experimental and numerical studies on W–Cu functionally graded materials produced by explosive compaction–welding sintering

Achieving high-strength W/W-10Cu joints by vacuum diffusion bonding with FeCoCu interlayer

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