直接冷却铸造法制备的三层6009/7050/6009铝合金复层板坯的变形和热处理能力
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| Published in | 中国有色金属学报：英文版 Vol. 28; no. 1; pp. 9 - 19 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2018
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1003-6326 |
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| Bibliography: | aluminum alloy; three-layer clad slab; direct-chill casting; plastic deformation; heat treatment 43-1239/TG Three-layer6009/7050/6009aluminum alloy clad slab was fabricated by an innovative direct-chill casting process.To study the response of the clad slab to plastic deformation and heat treatments,homogenization annealing,hot rolling,solution and aging were successively performed on the as-cast6009/7050/6009clad samples.The results revealed that excellent metallurgical bonding between7050alloy layer and6009alloy layer was achieved under optimal parameters.The clad ratio obviously decreased when the annealed sample was rolled to55%hot reduction level,and then changed slightly with further rolling.Furthermore,the content of rodlike Zn-rich phases increased significantly in7050alloy layer in the homogenized clad samples after rolling at55%,65%and75%hot reduction levels,and the higher level of hot reduction resulted in narrower diffusion layer.Subsequent solution and aging significantly improved the hardness in7050alloy layer,interfaces and6009alloy layers of the rolled samples except for the thin side for the75%hot reduction sample. |
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| ISSN: | 1003-6326 |