High temperature strain hardening behavior in double forged and potassium doped tungsten

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High temperature strain hardening behavior in double forged and potassium doped tungsten. / Sheng, Hua; Van Oost, Guido; Zhurkin, Evgeny; Terentyev, Dmitry; Dubinko, Vladimir I.; Uytdenhouwen, Inge; Vleugels, Jozef; Bonny, Giovanni (Peer reviewer).

In: Journal of Nuclear Materials, Vol. 444, No. 1-3, 01.2014, p. 214-219.

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Sheng, Hua ; Van Oost, Guido ; Zhurkin, Evgeny ; Terentyev, Dmitry ; Dubinko, Vladimir I. ; Uytdenhouwen, Inge ; Vleugels, Jozef ; Bonny, Giovanni. / High temperature strain hardening behavior in double forged and potassium doped tungsten. In: Journal of Nuclear Materials. 2014 ; Vol. 444, No. 1-3. pp. 214-219.

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@article{03687b81b9024b6a99d85b89e33fcbf4,
title = "High temperature strain hardening behavior in double forged and potassium doped tungsten",
abstract = "The strain-hardening behavior of two recently developed double forged and K-doped tungsten grades in the 300–2000 °C range was analyzed applying a phenomenological model describing the evolution of the flow stress as a function of the dislocation density. The applied model allowed establishing a correlation between the strain hardening curvature and the size of microstructural features controlling the dislocation multiplication. The obtained results demonstrated that plastic deformation was controlled by the resistance of the low angle grain boundaries below 1000 °C and the high angle grain boundaries at 1500 °C and above. The experimental results obtained at different loading rates showed that thermal activation was essential for the passage of dislocations through grain boundary interfaces at 1000 °C and above. The limitations of the applied model and need for further development of the physical model accounting for stress- and temperature-induced grain growth are discussed.",
keywords = "Not mentioned",
author = "Hua Sheng and {Van Oost}, Guido and Evgeny Zhurkin and Dmitry Terentyev and Dubinko, {Vladimir I.} and Inge Uytdenhouwen and Jozef Vleugels and Giovanni Bonny",
note = "Score = 10",
year = "2014",
month = "1",
doi = "10.1016/j.jnucmat.2013.09.057",
language = "English",
volume = "444",
pages = "214--219",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "1-3",

}

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TY - JOUR

T1 - High temperature strain hardening behavior in double forged and potassium doped tungsten

AU - Sheng, Hua

AU - Van Oost, Guido

AU - Zhurkin, Evgeny

AU - Terentyev, Dmitry

AU - Dubinko, Vladimir I.

AU - Uytdenhouwen, Inge

AU - Vleugels, Jozef

A2 - Bonny, Giovanni

N1 - Score = 10

PY - 2014/1

Y1 - 2014/1

N2 - The strain-hardening behavior of two recently developed double forged and K-doped tungsten grades in the 300–2000 °C range was analyzed applying a phenomenological model describing the evolution of the flow stress as a function of the dislocation density. The applied model allowed establishing a correlation between the strain hardening curvature and the size of microstructural features controlling the dislocation multiplication. The obtained results demonstrated that plastic deformation was controlled by the resistance of the low angle grain boundaries below 1000 °C and the high angle grain boundaries at 1500 °C and above. The experimental results obtained at different loading rates showed that thermal activation was essential for the passage of dislocations through grain boundary interfaces at 1000 °C and above. The limitations of the applied model and need for further development of the physical model accounting for stress- and temperature-induced grain growth are discussed.

AB - The strain-hardening behavior of two recently developed double forged and K-doped tungsten grades in the 300–2000 °C range was analyzed applying a phenomenological model describing the evolution of the flow stress as a function of the dislocation density. The applied model allowed establishing a correlation between the strain hardening curvature and the size of microstructural features controlling the dislocation multiplication. The obtained results demonstrated that plastic deformation was controlled by the resistance of the low angle grain boundaries below 1000 °C and the high angle grain boundaries at 1500 °C and above. The experimental results obtained at different loading rates showed that thermal activation was essential for the passage of dislocations through grain boundary interfaces at 1000 °C and above. The limitations of the applied model and need for further development of the physical model accounting for stress- and temperature-induced grain growth are discussed.

KW - Not mentioned

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_136488

UR - http://knowledgecentre.sckcen.be/so2/bibref/11732

U2 - 10.1016/j.jnucmat.2013.09.057

DO - 10.1016/j.jnucmat.2013.09.057

M3 - Article

VL - 444

SP - 214

EP - 219

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 1-3

ER -

ID: 184850