Production of aluminum AA7075/6060 compounds by die casting and hot extrusion
Production of aluminum AA7075/6060 compounds by die casting and hot extrusion
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DOI：
10.1016/j.jmatprotec.2020.116594
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发表时间：
2020-06-01
影响因子：
6.3
通讯作者：
Volk, Wolfram
中科院分区：
文献类型：
--
作者：
Gres, Thomas;Mittler, Tim;Volk, Wolfram
研究了粘结铝双层坯压铸和热挤压的工艺链。它代表了铸造和成型技术之间的能源和材料效率高的联系，用于生产负载调整的轻质结构。工业铝AA7075和AA6060最初是通过压铸连接的。分析了模具温度、冷却条件等工艺参数对界面形成的影响。重熔和重结晶过程以及加入伙伴之间的扩散驱动的相互作用被认为是主要的结合机制。随后使用热挤压对铸态双金属坯料进行后处理。本文介绍了铸造和大体积成形工艺链上的界面演化过程。
The process chain of die casting and hot extrusion for the fabrication of cohesively bonded aluminum bilayer billets was investigated. It represents an energy- and material-efficient link between casting and forming technologies for the production of load-adjusted lightweight constructions. Commercial aluminum AA7075 and AA6060 were initially jointed by die casting. The influence of various process parameters, such as die temperature and cooling conditions, on the interface formation was analyzed. Remelting and recrystallization processes as well as the diffusion-driven interaction between the joining partners were identified as major bonding mechanisms. As-cast bimetal billets were subsequently post-processed using hot extrusion. The present paper shows the interface evolution over the process chain of casting and massive forming.