Irradiation-induced hardening in fusion relevant tungsten grades with different initial microstructures

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Irradiation-induced hardening in fusion relevant tungsten grades with different initial microstructures. / Chang, Chih-Cheng; Terentyev, Dmitry; Zinovev, Aleksandr; Van Renterghem, Wouter; Yin, Chao; Verleysen, Patricia; Pardoen, Thomas; Vilémová, Monika; Matejicek, Jiri.

In: Physica Scripta, Vol. 96, 124021, 07.09.2021, p. 1-7.

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Chang, Chih-Cheng ; Terentyev, Dmitry ; Zinovev, Aleksandr ; Van Renterghem, Wouter ; Yin, Chao ; Verleysen, Patricia ; Pardoen, Thomas ; Vilémová, Monika ; Matejicek, Jiri. / Irradiation-induced hardening in fusion relevant tungsten grades with different initial microstructures. In: Physica Scripta. 2021 ; Vol. 96. pp. 1-7.

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@article{7b5359dc4a1d44a3b5dca98ab161aeaa,
title = "Irradiation-induced hardening in fusion relevant tungsten grades with different initial microstructures",
abstract = "The development of advanced tungsten grades able to tolerate irradiation damage combined with thermo-mechanical loads is important for design of plasma-facing components for DEMO. The material microstructure (i.e. grain size, dislocation density, sub grains, texture) is defined by manufacturing and post heat treatment processes. In turn, the initial microstructure might have an important influence on the accumulation of neutron damage because irradiation defects interact with microstructural defects evolving into a new microstructural state. In this work, the microstructure and hardness of four tungsten grades is assessed before and after neutron irradiation performed at 600, 1000 and 1200 °C, up to a dose of∼1.2 dpa. Experimental characterization involves hardness testing, energy dispersive spectroscopy, electron backscatter diffraction, and transmission electron microscopy. The investigated grades include Plansee andAT&MITER specification tungsten, as well as fine grain tungsten produced by spark plasma sintering, and ultra-fine grain tungsten reinforced with 0.5 wt% ZrC particles.",
keywords = "Tungsten, Neutron irradiation, Irradiation hardening, Microstructure",
author = "Chih-Cheng Chang and Dmitry Terentyev and Aleksandr Zinovev and {Van Renterghem}, Wouter and Chao Yin and Patricia Verleysen and Thomas Pardoen and Monika Vil{\'e}mov{\'a} and Jiri Matejicek",
note = "Score=10",
year = "2021",
month = sep,
day = "7",
doi = "10.1088/1402-4896/ac2181",
language = "English",
volume = "96",
pages = "1--7",
journal = "Physica Scripta",
issn = "0031-8949",
publisher = "IOP - IOP Publishing",

}

RIS - Download

TY - JOUR

T1 - Irradiation-induced hardening in fusion relevant tungsten grades with different initial microstructures

AU - Chang, Chih-Cheng

AU - Terentyev, Dmitry

AU - Zinovev, Aleksandr

AU - Van Renterghem, Wouter

AU - Yin, Chao

AU - Verleysen, Patricia

AU - Pardoen, Thomas

AU - Vilémová, Monika

AU - Matejicek, Jiri

N1 - Score=10

PY - 2021/9/7

Y1 - 2021/9/7

N2 - The development of advanced tungsten grades able to tolerate irradiation damage combined with thermo-mechanical loads is important for design of plasma-facing components for DEMO. The material microstructure (i.e. grain size, dislocation density, sub grains, texture) is defined by manufacturing and post heat treatment processes. In turn, the initial microstructure might have an important influence on the accumulation of neutron damage because irradiation defects interact with microstructural defects evolving into a new microstructural state. In this work, the microstructure and hardness of four tungsten grades is assessed before and after neutron irradiation performed at 600, 1000 and 1200 °C, up to a dose of∼1.2 dpa. Experimental characterization involves hardness testing, energy dispersive spectroscopy, electron backscatter diffraction, and transmission electron microscopy. The investigated grades include Plansee andAT&MITER specification tungsten, as well as fine grain tungsten produced by spark plasma sintering, and ultra-fine grain tungsten reinforced with 0.5 wt% ZrC particles.

AB - The development of advanced tungsten grades able to tolerate irradiation damage combined with thermo-mechanical loads is important for design of plasma-facing components for DEMO. The material microstructure (i.e. grain size, dislocation density, sub grains, texture) is defined by manufacturing and post heat treatment processes. In turn, the initial microstructure might have an important influence on the accumulation of neutron damage because irradiation defects interact with microstructural defects evolving into a new microstructural state. In this work, the microstructure and hardness of four tungsten grades is assessed before and after neutron irradiation performed at 600, 1000 and 1200 °C, up to a dose of∼1.2 dpa. Experimental characterization involves hardness testing, energy dispersive spectroscopy, electron backscatter diffraction, and transmission electron microscopy. The investigated grades include Plansee andAT&MITER specification tungsten, as well as fine grain tungsten produced by spark plasma sintering, and ultra-fine grain tungsten reinforced with 0.5 wt% ZrC particles.

KW - Tungsten

KW - Neutron irradiation

KW - Irradiation hardening

KW - Microstructure

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/45822966

U2 - 10.1088/1402-4896/ac2181

DO - 10.1088/1402-4896/ac2181

M3 - Article

VL - 96

SP - 1

EP - 7

JO - Physica Scripta

JF - Physica Scripta

SN - 0031-8949

M1 - 124021

ER -

ID: 7203423