期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 29, 期 8, 页码 1621-1630出版社
ELSEVIER
DOI: 10.1016/S1003-6326(19)65069-7
关键词
diffusion layer; Cu/Al multilayers; accumulative roll bonding; rolling temperature; intermetallics; mechanical properties
资金
- National Natural Science Foundation of China [51674303]
- National Youth Thousand Plan of China
- Huxiang High-Level Talent Gathering Program of Hunan Province, China [2018RS3015]
- Innovation Driven Program of Central South University, China [2019CX006]
- Research Fund of the Key Laboratory of High Performance Complex Manufacturing at Central South University, China
Cu/Al multilayers were produced by high-temperature accumulative roll bonding (ARB) methods up to three passes. To achieve a high bonding strength, prior to ARB processing, the Cu and Al sheets were heated to 350, 400, 450 and 500 degrees C, respectively. The mechanical properties were evaluated by tensile tests. The microstructure was examined by optical microscopy and scanning electron microscopy equipped with energy dispersive spectrometry. The ultimate tensile stress, the grain size and the thickness of diffusion layer of lamellar composites increase with rolling temperature. When the rolling temperature is 400 degrees C, the laminates show the highest ductility, but the yield stress is the lowest. As the rolling temperature further increases, both the yield stress and the ultimate tensile stress increase and the ductility decreases slightly. The mechanical properties of lamellar composites processed by low and high temperature ARB are determined by grain size and the thickness of diffusion layer, respectively.
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