The formation of bimodal grain size distribution in Al-Mg-Si-Cu alloy and its effect on the formability
| Autor: | Gao-jie Li, L. Z. Zhuang, Yunan Zhang, Lin Tong, Mingxing Guo, Zhu Jie, J.S. Zhang |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Alloy Metallurgy 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Deformation mechanism Mechanics of Materials 0103 physical sciences Particle-size distribution engineering Fracture (geology) Formability General Materials Science Texture (crystalline) 0210 nano-technology Anisotropy |
| Zdroj: | Materials Characterization. 132:248-259 |
| ISSN: | 1044-5803 |
| DOI: | 10.1016/j.matchar.2017.08.013 |
| Popis: | The formation of bimodal grain size distribution in Al-Mg-Si-Cu alloy and its effect on the formability have been studied by microstructure and property characterization, and modelling. The results reveal that, an attractive way to develop the bimodal microstructure can be greatly used to improve the formability of Al-Mg-Si-Cu alloys, in which the texture can be also weakened. Mechanical properties tests revealed a great improvement in both the formability and anisotropy, i.e. r ¯ = 0.623, Δr = 0.012, can be obtained in the alloy with the bimodal microstructure of coarse and fine grains, which makes this alloy much promising in automotive application. Additionally, according to the microstructure evolution and fracture morphology, both the forming mechanism of bimodal microstructure and deformation mechanism of the Al-Mg-Si-Cu alloys were put forward in this paper. |
| Databáze: | OpenAIRE |
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