Brittle-ductile transition temperature of recrystallized tungsten following exposure to fusion relevant cyclic high heat load

Shah, Varun; Dommelen, J.A.W. van; Altstadt, E.; Das, Aniruddh; Geers, M.G.D.

doi:10.1016/j.jnucmat.2020.152416

Cited by 22 publications

(10 citation statements)

References 86 publications

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“…The simulation results reveal a clear agreement with the BDTT observed in literature. Furthermore, it is shown that the BDTT of a rolled microstructure decreases with recrystallization, which is in line with several experimental results in literature [27,[33][34][35]. However, under fusion conditions, the tungsten plasma facing components are also subjected to neutron irradiation, which is well known to make tungsten more brittle.…”

Section: Discussionsupporting

confidence: 87%

Computational analysis of the evolution of the brittle-to-ductile transition of tungsten under fusion conditions

Vrielink¹,

Dommelen²,

Geers³

2020

Modelling Simul. Mater. Sci. Eng.

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Section: Discussionsupporting

confidence: 87%

Computational analysis of the evolution of the brittle-to-ductile transition of tungsten under fusion conditions

Vrielink¹,

Dommelen²,

Geers³

2020

Modelling Simul. Mater. Sci. Eng.

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“…However, in some studies, improved ductility after recrystallization has been observed, e.g. in tensile tests of pure tungsten [20,21]. Moreover, in the case of cyclic thermal loading, the yield stress instead of the ductility is a more relevant measure to assess the susceptibility to crack initiation.…”

Section: Introductionmentioning

confidence: 99%

Recrystallization-mediated crack initiation in tungsten under simultaneous high-flux hydrogen plasma loads and high-cycle transient heating

Morgan

Vermeij

et al. 2021

Nucl. Fusion

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“…Meanwhile, for RX-W, strain-hardening capacity with large uniform elongation with ~70% of total elongation was observed, while YS decreased to ~110 MPa. Such behaviors could be attributed to a difference in their initial microstructure and dislocation density [ 21 , 22 ]. That is, high dislocation density that existed in DF-W could result in a dislocation–dislocation interaction, which interferes with their movements and results in high YS and reduced ductility.…”

Section: Resultsmentioning

confidence: 99%

Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition

Kong

Shin

et al. 2022

Materials

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The tensile deformation behavior of double-forged (DF-W) and recrystallized (RX-W) commercial-grade tungsten was investigated at 700 °C. With increasing strain rate, the dominant dynamic recrystallization (DRX) mechanism changes from continuous dynamic recrystallization (CDRX) to discontinuous dynamic recrystallization (DDRX). For DF-W, pre-existing sub-grains promote CDRX and associated a high-DRX fraction, resulting in reduced post-necking strain under a static condition. With increasing strain rate, a shift in the restoration mechanism from CDRX to DDRX contributes to the enhanced ductility in DF-W, while RX-W shows enhanced flow hardening without a loss of ductility. These results suggest that the strain-rate dependence of mechanical behavior depends on the initial microstructure.

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Brittle-ductile transition temperature of recrystallized tungsten following exposure to fusion relevant cyclic high heat load

Cited by 22 publications

References 86 publications

Computational analysis of the evolution of the brittle-to-ductile transition of tungsten under fusion conditions

Computational analysis of the evolution of the brittle-to-ductile transition of tungsten under fusion conditions

Recrystallization-mediated crack initiation in tungsten under simultaneous high-flux hydrogen plasma loads and high-cycle transient heating

Strain-Rate Dependence of Tensile Behavior in Commercial-Grade Tungsten—Effect of Recrystallization Condition

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