Effects of He irradiation on the microstructure and mechanical performance of Li2TiO3

doi:10.1088/1741-4326/ac18de

	Effects of He irradiation on the microstructure and mechanical performance of Li2TiO3
	Gu,Shouxi 1,2; Ji,Baolong 1,2; Qi,Qiang 1; Wang,Jing 1; Zhou,Hai-Shan 1; Zhang,Yingchun 3; Luo,Guang-Nan 1
刊名	Nuclear Fusion
	2021-09-20
卷号	61
关键词	ion irradiation structural disorder hardness tritium breeder irradiation damage
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac18de
英文摘要	AbstractIn solid fusion blankets, energetic helium ions produced by the breeding reaction bombard Li2TiO3 and influence its microstructure and mechanical performance. Here, evaluations of the microstructure and mechanical performance are performed for Li2TiO3 irradiated with 2?MeV helium ions. The Raman spectra demonstrate irradiation-induced structural disorders, which are corroborated by transmission electron microscopy micrographs and selected area electron dispersion patterns. Nanoindentation investigations indicate that the hardness is influenced by irradiation damage. At low doses (about 0.018 dpa), the decrease in hardness is caused by dislocation motion and a decrease of the bond density per unit volume. At high doses (about 0.86 dpa), the defect clusters formed impede the mobility of dislocations, which is the main reason for the increase in hardness. Based on hardness theories and Raman spectra, the decrease in bond length is considered to be another reason for the increase in hardness.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0029-5515-61-10-AC18DE
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125371]
专题	中国科学院合肥物质科学研究院
作者单位	1.Institute of Plasma Physics, Hefei Institutes of Physical Sciences, Chinese Academy of Sciences, Hefei, 230031, China 2.Science Island Branch, Graduate School of USTC, Hefei, 230036, China 3.School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China
推荐引用方式 GB/T 7714	Gu,Shouxi,Ji,Baolong,Qi,Qiang,et al. Effects of He irradiation on the microstructure and mechanical performance of Li2TiO3[J]. Nuclear Fusion,2021,61.
APA	Gu,Shouxi.,Ji,Baolong.,Qi,Qiang.,Wang,Jing.,Zhou,Hai-Shan.,...&Luo,Guang-Nan.(2021).Effects of He irradiation on the microstructure and mechanical performance of Li2TiO3.Nuclear Fusion,61.
MLA	Gu,Shouxi,et al."Effects of He irradiation on the microstructure and mechanical performance of Li2TiO3".Nuclear Fusion 61(2021).