Enhanced Plasticity of Cu-Based Laminated Composites Produced by Cold Roll-Bonding
Two different laminated composites with submicron-scale grain size and strong interface bonding toughness, Cu/Al and Cu/Cu, were fabricated by cold-roll bonding at ambient temperature, and then annealing of the laminated composites was conducted to get different interface bonding toughness. It was found that a better strength-plasticity combination for the laminated composites could be obtained through stronger interface bonding toughness, which effectively delayed the onset of plastic instability and premature local necking of the material. Uniform elongation of both Cu/Al and Cu/Cu laminated composites was enhanced compared with that of the cold-rolled Cu. At the same strength level, plasticity of the Cu/Cu laminated composite is better than that of the Cu/Al one and that of the coldrolled Cu. Mechanisms of plasticity instability and fracture of the laminated composites were evaluated.
H.S.Liu B.Zhang G.P.Zhang
Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sc Key Laboratory for Anisotropy and Texture of Materials of Ministry of Education,School of Materials
国际会议
5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)
南京
英文
1015-1020
2011-03-01（万方平台首次上网日期，不代表论文的发表时间）