Microstructure evolution in titanium carbide with different stoichiometry under 3 MeV Au<SUP>2+</SUP> ion irradiation

doi:10.1016/j.jnucmat.2025.155609

IMR OpenIR

	Microstructure evolution in titanium carbide with different stoichiometry under 3 MeV Au²⁺ ion irradiation
	Shi, Jinyu 1,2; Lei, Yiming 1; Wang, Chenxu 3; Zhang, Jie 1; Wang, Jingyang 1
通讯作者	Zhang, Jie(jiezhang@imr.ac.cn)
	2025-02-01
发表期刊	JOURNAL OF NUCLEAR MATERIALS
ISSN	0022-3115
卷号	606 页码:12
摘要	Titanium carbide (TiC) with the merits of stability and corrosion resistance has been regarded as promising structural material candidate for advanced nuclear reactors. The effects of deviation in carbon stoichiometry and local ordering of carbon vacancies on the irradiation-induced microstructure evolution of TiCx (x = 0.62-0.98) were targeted. 3 MeV Au2+ ion irradiation at room temperature (RT) was conducted over a series of ion fluences ranging from 1 x 10(14) to 2 x 10(16) ions cm(-2), together with grazing incidence X-ray diffraction (GIXRD) and transmission electron microscopy (TEM). No amorphization was traced for titanium carbide ceramics with different stoichiometry irradiated at doses up to similar to 70 displacements per atom (dpa). Substoichiometric titanium carbides exhibited excellent lattice expansion resistance compared to near stoichiometric one beyond a dose of similar to 30 dpa. In addition, irradiation-induced two ordered phases and twins were observed. Local ordering of C vacancies benefits the accommodation, annihilation of irradiation induced defects, which enhances the tolerance of irradiation-induced amorphization of titanium carbide ceramics. This work provides a comprehensive understanding of microstructure evolution in titanium carbide with different stoichiometry, which facilitates the application of titanium carbide ceramics as advanced reactors cores concepts.
关键词	Titanium carbide ceramics Ion irradiation Amorphization resistance Ordered phases Twins
资助者	Fundamental Research Project of Shenyang National Laboratory for Materials Science
DOI	10.1016/j.jnucmat.2025.155609
收录类别	SCI
语种	英语
资助项目	Fundamental Research Project of Shenyang National Laboratory for Materials Science
WOS研究方向	Materials Science ; Nuclear Science & Technology
WOS类目	Materials Science, Multidisciplinary ; Nuclear Science & Technology
WOS记录号	WOS:001397940100001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180212
专题	中国科学院金属研究所
通讯作者	Zhang, Jie
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Peking Univ, Ctr Appl Phys & Technol, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Shi, Jinyu,Lei, Yiming,Wang, Chenxu,et al. Microstructure evolution in titanium carbide with different stoichiometry under 3 MeV Au²⁺ ion irradiation[J]. JOURNAL OF NUCLEAR MATERIALS,2025,606:12.
APA	Shi, Jinyu,Lei, Yiming,Wang, Chenxu,Zhang, Jie,&Wang, Jingyang.(2025).Microstructure evolution in titanium carbide with different stoichiometry under 3 MeV Au²⁺ ion irradiation.JOURNAL OF NUCLEAR MATERIALS,606,12.
MLA	Shi, Jinyu,et al."Microstructure evolution in titanium carbide with different stoichiometry under 3 MeV Au²⁺ ion irradiation".JOURNAL OF NUCLEAR MATERIALS 606(2025):12.