Measurement of the residual stresses dynamics in tungsten during heating

Ilya Balash, Aleksey Arakcheev, Marat Sharafutdinov, Alexander Shmakov, Boris Tolochko, Alexander Vasilyev

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

In a thermonuclear reactor plasma interacts with the divertor walls in the form of periodic heat pulses as well as constant heat load. As a result, residual plastic deformations and mechanical stresses can occur, which cause destruction of the divertor material. However, these residual deformations and stresses can be relieved under the influence of constant flux of plasma and the consequential high temperature of the material. The goal of this work was the study of residual stresses dynamics in a heated material. Residual deformations and stresses were measured using X-ray diffractometry. The measurements were conducted on tungsten samples that were irradiated with an electron beam on the BETA facility with the purpose of simulating plasma heat loads. Synchrotron radiation scattering station “Anomalous scattering” on the beam line 2 of VEPP-3 was used to measure diffractograms from which scattering angle - sample tilt angle dependencies were obtained. The experimental data was used for calculation of deformation and stress tensor components. To compare heat load and residual stress profiles the measurements were conducted with spatial resolution. Synchrotron radiation scattering station “Diffraction movie” was used for measuring the dynamics of residual stresses during heating. As a result of these experiments scattering angle - temperature dependencies were obtained. Residual stresses relaxation was measured, the result has met our expectations.

Язык оригиналаанглийский
Название основной публикацииSynchrotron and Free Electron Laser Radiation
Подзаголовок основной публикацииGeneration and Application, SFR 2020
РедакторыBoris Knyazev, Nikolay Vinokurov
ИздательAmerican Institute of Physics Inc.
ISBN (электронное издание)9780735440333
DOI
СостояниеОпубликовано - 17 ноя 2020
Событие2020 Internetional Conference on Synchrotron and Free Electron Laser Radiation: Generation and Application, SFR 2020 - Novosibirsk, Российская Федерация
Продолжительность: 13 июл 202016 июл 2020

Серия публикаций

НазваниеAIP Conference Proceedings
Том2299
ISSN (печатное издание)0094-243X
ISSN (электронное издание)1551-7616

Конференция

Конференция2020 Internetional Conference on Synchrotron and Free Electron Laser Radiation: Generation and Application, SFR 2020
СтранаРоссийская Федерация
ГородNovosibirsk
Период13.07.202016.07.2020

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