Effect of Mg plate pretreatment on microstructure and mechanical properties of Al/Mg/Al laminated composites fabricated by hot roll bonding
| Autor: | Biao Yan, Xinzhe Xue, Cong Ma, Li Tingyu, Pengfei Yan, Yu Yang, Lu Zhehao |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Statistical and Nonlinear Physics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Roll bonding Diffusion layer 0103 physical sciences Laminated composites Severe plastic deformation Composite material 0210 nano-technology |
| Zdroj: | International Journal of Modern Physics B. 34:2040052 |
| ISSN: | 1793-6578 0217-9792 |
| DOI: | 10.1142/s0217979220400524 |
| Popis: | The AA7075/AZ31/AA7075 laminated composites were fabricated by hot roll bonding. The effects of pretreatment of Mg plate by severe plastic deformation (SPD) and heat treatment on its interface, microstructure and mechanical properties were studied. The diffusion layer is formed at the interface between Al and Mg layers, which is composed of the hard and brittle intermetallic phases [Formula: see text] and [Formula: see text], and become the weak zone of the laminated composites where the crack is first-generated and propagated to cause the delamination at the interface of the laminated composites. The hardness of laminated composites at the interface reaches 300–400 HV. Meanwhile, Mg plate pretreatment can increase the plastic matching and the deformation compatibility of the Al and Mg layers, and can effectively improve the mechanical properties of the laminated composites to a certain extent. The bending strength of the laminated composites with pretreated Mg plates are 1080 MPa. |
| Databáze: | OpenAIRE |
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