Effects of Fe self-ion irradiation on a low carbon MX-ODS steel at 550°C

被引：2

作者：

Xu, Yuwen ^{[1
]}

Yun, Di ^{[1
,2
]}

Yan, Xu ^{[1
]}

Zhang, Ping ^{[1
]}

Yan, Wei ^{[3
,4
]}

Li, Yanfen ^{[3
,4
]}

Li, Chao ^{[5
]}

Li, Jiao ^{[5
]}

Zhang, Tongmin ^{[6
]}

Li, Jun ^{[6
]}

Zhou, Junjun ^{[6
]}

Kang, Long ^{[6
]}

Lu, Chenyang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Nucl Sci & Technol, Xian, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow, Xian, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang, Peoples R China

[4] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang, Peoples R China

[5] Xi An Jiao Tong Univ, Instrumental Anal Ctr, Xian, Peoples R China

[6] Chinese Acad Sci, Inst Modern Phys IMP, Lanzhou, Peoples R China

来源：

FRONTIERS IN ENERGY RESEARCH | 2023年 / 10卷

关键词：

ODS steel; ion irradiation; void swelling; oxide nano-precipitate; MX phase; RADIATION RESPONSE; PHASE INSTABILITY; SECONDARY PHASES; FERRITIC STEELS; ALLOY; STABILITY; ELECTRON; PARTICLES; EVOLUTION; DIFFUSION;

D O I：

10.3389/fenrg.2022.988745

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Oxide Dispersion Strengthened (ODS) steels with nano-scale oxides have become one of the candidate materials used in advanced nuclear reactor systems. A novel MX-ODS steel with extremely low carbon content was irradiated with 3 MeV Fe ions at 550 & DEG;C up to peak damage of 70 dpa. The steel contains uniformly distributed Y2O3 nano-precipitates with an average size of 3.5 nm and a number density of 5 x 10(22)/m(3). A V-rich shell was found surrounding the core of Y, O, and Si at some particles. Two types of large precipitates, Y-Ta-Si oxides, and VN, were observed in the steel instead of carbides. Voids of very small size are present due to irradiation and the calculated void swelling was only 0.004%, suggesting good irradiation tolerance of the MX-ODS steel in this study. Fine and dense oxide nano-precipitates and their shell-core structure remained stable while the shape of large precipitates changed after irradiation.

引用

页数：12

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