Microanalysis of the Effects of Tokamak Thermal Transients on Eurofer 97 Steel
Microanalysis of the Effects of Tokamak Thermal Transients on Eurofer 97 Steel
复制标题
托卡马克热瞬变对 Eurofer 97 钢影响的微观分析
DOI：
10.1017/s1431927622008042
复制
发表时间：
2022
影响因子：
2.8
通讯作者：
Hargreaves J
中科院分区：
文献类型：
--
作者：
Hargreaves J
在原型托卡马克聚变反应堆中，氢等离子体将被提升到1.5亿至2亿摄氏度的极端温度。尽管在强磁场和过多的缓解措施中受到限制，但不期望的等离子体不稳定性和中断偶尔会导致这种热聚变等离子体接触反应堆的等离子体表面[1]。短持续时间但高强度的瞬态热负荷，（< 0.1秒，~ 7.5 MW m-2）可能会使反应堆钨铠装内壁的底层结构材料（第一道墙）的温度高达850 C [2]。DEMOnstration聚变发电站（DEMO）的第一道墙很可能是由低活化铁素体建造的，马氏体9 Cr钢Eurofer 97 [3].虽然传统9 Cr钢的等温时效行为已得到充分理解[4]，但Eurofer 97独特的低活化成分（8.89 Cr-1.11 W-0.44 Mn-0.19 V-0.14 Ta wt.%）并且由等离子体-壁相互作用施加的强烈的热瞬变可能引起新的降解行为。随着时间的推移，Eurofer 97的正火和回火板条马氏体显微组织和精心设计的第二相（主要是富Cr/W的M23 C6和TaC/VN MX型）可能会发生显著变化。这种独特的热降解机制及其对Eurofer 97的影响必须在获得反应堆许可证之前进行全面表征。
In a prototype tokamak fusion reactor, a hydrogen plasma will be raised to extreme temperatures of 150-200 million C. Despite confinement within strong magnetic fields and a plethora of mitigation measures, undesirable plasma instabilities and disruptions may occasionally cause this hot fusion plasma to touch the plasma-facing surfaces of the reactor [1]. The short duration but high intensity transient thermal loads that arise (< 0.1 sec,~ 7.5 MW m-2) may briefly subject the underlying structural materials of the reactors tungsten-armoured interior wall (the first wall) to temperatures of up to 850 C [2].The first wall of the DEMOnstration fusion power station (DEMO) is likely to be constructed from the reduced activation ferritic-martensitic 9Cr steel Eurofer 97 [3]. While the isothermal ageing behaviour of conventional 9Cr steels is well understood [4], Eurofer 97’s unique reduced activation composition (8.89 Cr-1.11 W-0.44 Mn-0.19 V–0.14 Ta wt.%) and the intense thermal transients imposed by plasma-wall interactions may give rise to novel degradation behaviour. Over time, Eurofer 97’s normalised and tempered lath martensite microstructure and carefully engineered secondary phases (predominantly Cr/W-rich M23C6, and TaC/VN MX-type) may become significantly altered. This unique thermal degradation mechanism and its effects on Eurofer 97 must be characterised comprehensively prior to reactor licensing.
等离子体热瞬变对 EU DEMO 第一墙保护设计的影响
DOI：
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发表时间：
2020
期刊：
影响因子：
--
作者：
F. Maviglia;C. Bachmann;G. Federici;T. Franke;M. Siccinio;C. Vorpahl;R. Albanese;R. Ambrosino;E. Fable;M. Firdaouss;J. Gérardin;V. Loschiavo;M. Mattei;F. Palermo;M. Richiusa;F. Villone;Z. Vizvary
通讯作者：
Z. Vizvary
影响因子：
1.7
作者：
L. Forest;J. Aktaa;L. Boccaccini;Thomas Emmerich;Bradut Eugen;Gilles Fondant;A. Froio;A. Puma;H. Namburi;H. Neuberger;J. Rey;L. Savoldi;D. Sornin;L. Vála
通讯作者：
L. Vála
聚变反应堆热瞬变对 Eurofer-97 钢微观结构的影响
DOI：
--
发表时间：
2021
期刊：
影响因子：
--
作者：
D. Kumar;J. Hargreaves;A. Bharj;A. Scorror;L. M. Harding;H. Dominguez;R. Holmes;R. Burrows;H. Dawson;A. Warren;P. Flewitt;Tomas L Martin
通讯作者：
Tomas L Martin