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Processing Al-Cu and Al-ST bimetal wires for lightweight structures

Paper presented at 2nd International Conference on Light Materials - Science and Technology, LightMAT 2017, Bremen, 8.-10.11.2017
: Berger, Andrea; Fux, Volker; Seifert, Marko; Beitelschmidt, Denise

Volltext urn:nbn:de:0011-n-4770722 (153 KByte PDF)
MD5 Fingerprint: 5f6a640e54f68e2903972f18ae1e10a5
Erstellt am: 09.11.2018

2017, 3 S.
International Conference on Light Materials - Science and Technology (LightMAT) <2, 2017, Bremen>
Vortrag, Elektronische Publikation
Fraunhofer IWS ()
roll bonding; Plating; transition joint; bimetal-compound; intermetallic phase

Bimetals can combine properties in a semi-finished product, which cannot be achieved with a single material, high quality materials can be used more efficiently and more economically. They can be made by cold or hot roll bonding, extrusion of composites or centrifugal casting, and are used as contactor connecting elements, fasteners, or as bearing materials. Most bimetal semi-finished products are produced as strips or sheets. This results in labor-intensive machining and is thus costly for applications that demand very slim geometries and thus comprehensive subsequent machining. The manufacturing process of rectangular-profiled bimetal wires by means of laser roll bonding was developed by the Fraunhofer IWS and subsequently patented. The process results in very small total deformation ratios in order to generate highly loadable bimetal wires. They can be used as transition joints in several mechanical or electronics applications. In laser roll bonding brittle phases can be nearly avoided which is quite advantageous and provides high-strength material composites with good cold formability - even for material which strongly tend to form intermetallic phases.