IMR OpenIR
Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites
Liang, Fei; Luo, Xue-Mei; Zhang, Guang-Ping
2019-01-16
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume743Pages:436-444
AbstractMaximizing the interface coupling effect is a key to improve mechanical properties of laminate/gradient structures. In this work, Ni/Cu/Ni sandwich-structured composites with the middle Cu layers cyclically deformed to different cycles were fabricated to investigate the influence of initial dislocation density on the interface-coupling-dependent mechanical behavior. Extra yield strength contributed by the interface coupling was found to decrease with decreasing the degree of mechanical incompatibility across the interface during uniaxial tensile loading. In addition, the width of geometrical necessary dislocation (GND) pile-up regions adjacent to the interfaces was observed to decrease with increasing the initial dislocation density of Cu layers, which is attributed to the change of source-obstacle configuration in the stress gradient model. These findings suggest that the GND strengthening effect caused by the interface coupling and the cyclic hardening effect in the constituent layers appears to be competitive, and the interface coupling effect is gradually weakened with increasing the initial dislocation density of Cu layers.
KeywordLaminated composites Interface Geometrically necessary dislocation Stress gradient Interface-affected zone
Indexed BySCI
Language英语
WOS IDWOS:000456891500049
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81446
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Liang, Fei,Luo, Xue-Mei,Zhang, Guang-Ping. Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,743:436-444.
APA Liang, Fei,Luo, Xue-Mei,&Zhang, Guang-Ping.(2019).Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,743,436-444.
MLA Liang, Fei,et al."Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 743(2019):436-444.
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