Effects of fuel particle size and fission-fragment-enhanced irradiation creep on the in-pile behavior in CERCER composite pellets

doi:10.1016/j.jnucmat.2016.10.035

	Effects of fuel particle size and fission-fragment-enhanced irradiation creep on the in-pile behavior in CERCER composite pellets
	Zhao, Yunmei 1; Ding, Shurong 1; Zhang, Xunchao2 ; Wang, Canglong 2; Yang, Lei2
刊名	JOURNAL OF NUCLEAR MATERIALS
	2016-12-15
卷号	482 页码:278-293
关键词	Particle size effect Fission-fragment-enhanced irradiation creep Numerical simulation Cracking mechanism
ISSN号	0022-3115
DOI	10.1016/j.jnucmat.2016.10.035
英文摘要	The micro-scale finite element models for CERCER pellets with different-sized fuel particles are developed. With consideration of a grain-scale mechanistic irradiation swelling model in the fuel particles and the irradiation creep in the matrix, numerical simulations are performed to explore the effects of the particle size and the fission-fragment-enhanced irradiation creep on the thermo-mechanical behavior of CERCER pellets. The enhanced irradiation creep effect is applied in the 10 mm-thick fission fragment damage matrix layer surrounding the fuel particles. The obtained results indicate that (1) lower maximum temperature occurs in the cases with smaller-sized particles, and the effects of particle size on the mechanical behavior in pellets are intricate; (2) the first principal stress and radial axial stress remain compressive in the fission fragment damage layer at higher burnup, thus the mechanism of radial cracking found in the experiment can be better explained. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2016YFB0700103] ; National Natural Science Foundation of China[11572091] ; National Natural Science Foundation of China[91226101] ; National Natural Science Foundation of China[11172068] ; National Natural Science Foundation of China[11272092]
WOS关键词	MECHANICAL BEHAVIORS ; NUMERICAL-METHOD ; ADS ; DIFFUSION ; EVOLUTION ; TRANSMUTATION ; SIMULATION ; REACTORS ; URANIUM ; PLATES
WOS研究方向	Materials Science ; Nuclear Science & Technology ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000387966100034
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/43687]
专题	中国科学院近代物理研究所
通讯作者	Ding, Shurong
作者单位	1.Fudan Univ, Dept Aeronaut & Astronaut, Inst Mech & Computat Engn, Shanghai 200433, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yunmei,Ding, Shurong,Zhang, Xunchao,et al. Effects of fuel particle size and fission-fragment-enhanced irradiation creep on the in-pile behavior in CERCER composite pellets[J]. JOURNAL OF NUCLEAR MATERIALS,2016,482:278-293.
APA	Zhao, Yunmei,Ding, Shurong,Zhang, Xunchao,Wang, Canglong,&Yang, Lei.(2016).Effects of fuel particle size and fission-fragment-enhanced irradiation creep on the in-pile behavior in CERCER composite pellets.JOURNAL OF NUCLEAR MATERIALS,482,278-293.
MLA	Zhao, Yunmei,et al."Effects of fuel particle size and fission-fragment-enhanced irradiation creep on the in-pile behavior in CERCER composite pellets".JOURNAL OF NUCLEAR MATERIALS 482(2016):278-293.