Microstructure and mechanical properties of (B4C+Al2O3)/Al composites designed for neutron absorbing materials with both structural and functional usages

doi:10.1016/j.msea.2019.138840

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructure and mechanical properties of (B4C+Al2O3)/Al composites designed for neutron absorbing materials with both structural and functional usages
	Zan, Y. N.1,2; Zhou, Y. T.2; Liu, Z. Y.2; Wang, Q. Z.3; Wang, W. G.2; Wang, D.2; Xiao, B. L.2; Ma, Z. Y.2
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2020-01-31
卷号	773 页码:9
关键词	Metal-matrix composites Neutron absorbing materials Microstructure Mechanical properties High-temperature strength
ISSN号	0921-5093
DOI	10.1016/j.msea.2019.138840
通讯作者	Wang, Q. Z.() ; Ma, Z. Y.(zyma@imr.ac.cn)
英文摘要	To meet the demand for the new generation of neutron absorber materials (NAMs) for the dry storage of the spent nuclear fuels, (B4C + Al2O3)/Al composites were fabricated by powder metallurgy technique using ultrafine Al powders. The composites designed with various fabricating parameters and fabricated at various sintering temperatures were characterized by electron microscopy and mechanically tested. The sample sintered at 450 degrees C shows the best strength-ductility balance at 350 degrees C (106.2 MPa in ultimate tensile strength and 9.6% in elongation). Addition of B4C particles and increase of the Al2O3 film thickness could enhance the strength of the composites at room temperature but showed no obvious effect on the strength at 350 degrees C. When sintering temperature of the composites increased from 450 degrees C to 550 degrees C, the transformation of amorphous Al2O3 lamellae to gamma-Al2O3 particles led to deterioration of the strength of the composites. Based on the analyses of both high-temperature deformation mechanism and strengthening mechanism, it was considered that the amorphous Al2O3 could pin the grain boundaries and prevent them from gliding, which was the main factor to significantly increase the high-temperature strength. Based on the results, a strategy to design the aluminium matrix NAMs with excellent high-temperature strength was proposed.
资助项目	National Natural Science Foundation of China[U1508216] ; National Natural Science Foundation of China[51771194] ; Youth Innovation Promotion Association CAS[2016179] ; National Key R&D Program of China[2017YFB0703104]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000513985200066
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137482]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Q. Z.; Ma, Z. Y.
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zan, Y. N.,Zhou, Y. T.,Liu, Z. Y.,et al. Microstructure and mechanical properties of (B4C+Al2O3)/Al composites designed for neutron absorbing materials with both structural and functional usages[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,773:9.
APA	Zan, Y. N..,Zhou, Y. T..,Liu, Z. Y..,Wang, Q. Z..,Wang, W. G..,...&Ma, Z. Y..(2020).Microstructure and mechanical properties of (B4C+Al2O3)/Al composites designed for neutron absorbing materials with both structural and functional usages.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,773,9.
MLA	Zan, Y. N.,et al."Microstructure and mechanical properties of (B4C+Al2O3)/Al composites designed for neutron absorbing materials with both structural and functional usages".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 773(2020):9.