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Deformation behavior and microstructure effect in 2124Al/SiCp composite
Ling Z(凌中); Zhong, L (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
Source PublicationJournal of Composite Materials
2000
Volume34Issue:2Pages:101-115
ISSN0021-9983
AbstractDynamic compression tests were performed by means of a Split Hopkinson Pressure Bar (SHPB). Test materials were 2124Al alloys reinforced with 17% volume fraction of 3, 13 and 37 μm SiC particles, respectively. Under strain rate ε = 2100 l/s, SiC particles have a strong effect on σ0.2 of the composites and the σ0.2 increases with different SiC particle size in the following order: 2124Al-alloy → 124Al/SiCp (37 μm) → 2124Al/SiCp (13 μm) → 2124Al/SiCp (3 μm), and the strain hardening of the composites depends mainly on the strain hardening of matrix, 2124A1 alloy. The results of dimensional analysis present that the flow stress of these composites not only depends on the property of reinforcement and matrix but also relates to the microstructure scale, matrix grain size, reinforcement size, the distance between reinforcements and dislocations in matrix. The normalized flow stress here is a function of inverse power of the edge-edge particle spacing, dislocation density and matrix grain size. Close-up observation shows that, in the composite containing SiC particles (3 μm), localized deformation formed readily comparing with other materials under the same loading condition. Microscopic observations indicate that different plastic flow patterns occur within the matrix due to the presence of hard particles with different sizes.
Subject Area力学
DOI10.1106/4ET5-AB4L-B6XT-TR08
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000085258700002
WOS KeywordMATRIX COMPOSITES ; 2-PHASE COMPOSITES
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Composites
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/17456
Collection力学所知识产出(1956-2008)
Corresponding AuthorZhong, L (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Ling Z,Zhong, L . Deformation behavior and microstructure effect in 2124Al/SiCp composite[J]. Journal of Composite Materials,2000,34,2,:101-115.
APA Ling Z,&Zhong, L .(2000).Deformation behavior and microstructure effect in 2124Al/SiCp composite.Journal of Composite Materials,34(2),101-115.
MLA Ling Z,et al."Deformation behavior and microstructure effect in 2124Al/SiCp composite".Journal of Composite Materials 34.2(2000):101-115.
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