Knowledge Management System of Institue of Mechanics, CAS
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 Publication | Journal of Composite Materials |
2000 | |
Volume | 34Issue:2Pages:101-115 |
ISSN | 0021-9983 |
Abstract | Dynamic 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 |
DOI | 10.1106/4ET5-AB4L-B6XT-TR08 |
URL | 查看原文 |
Indexed By | SCI |
Language | 英语 |
WOS ID | WOS:000085258700002 |
WOS Keyword | MATRIX COMPOSITES ; 2-PHASE COMPOSITES |
WOS Research Area | Materials Science |
WOS Subject | Materials Science, Composites |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/17456 |
Collection | 力学所知识产出(1956-2008) |
Corresponding Author | Zhong, 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. |
Files in This Item: | Download All | |||||
File Name/Size | DocType | Version | Access | License | ||
ja257.pdf(1502KB) | 开放获取 | -- | View Download |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment