Production of aluminum AA7075/6060 compounds by die casting and hot extrusion

被引：11

作者：

Gres, Thomas ^{[1
]}

Mittler, Tim ^{[1
]}

Chen, Hui ^{[2
]}

Stahl, Jens ^{[1
]}

Schmid, Simon ^{[1
]}

Ben Khalifa, Noomane ^{[2
,3
]}

Volk, Wolfram ^{[1
]}

机构：

[1] Tech Univ Munich, Chair Met Forming & Casting, Walther Meissner Str 4, D-85748 Garching, Germany

[2] Leuphana Univ Luneburg, Inst Prod & Proc Innovat, Volgershall 1, D-21339 Luneburg, Germany

[3] Helmholtz Zentrum Geesthacht, Inst Mat Res, Magnesium Innovat Ctr MagIC, Max Planck Str 1, D-21052 Geesthacht, Germany

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2020年 / 280卷

关键词：

Compound casting; Hot extrusion; Bimetal; Cohesion; Interface development; Aluminum billet; HEAT-TREATMENT; BIMETAL;

D O I：

10.1016/j.jmatprotec.2020.116594

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：12

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