Verbundstrangpressen von Titan‐Aluminium‐Verbindungen

Abstract

The combination of different metals enables the processing of materials with local optimized properties. Thus, the production of metallic composites is associated with high standards in manufacturing technologie. Focus of the following investigations is the rod extrusion process of titanium-aluminum-composites. Besides the mechanical properties, the formation of the bonding zone and the mechanisms of adhesion in the bonding zone were investigated. The influence of specimens' preparation and of different coatings used improve bonding were a matter of particular interest. Whereas coatings of copper or nickel inhibit the formation of a strong bonding due to the formation of oxide layers, sealed titanium cores can reach a mechanical strength of up to 100 MPa after rod extrusion. Compared to other joining technologies, an impairment of the base metal via formation of heat affected zones, pores or grain coarsening does not occur.

Simulation of a Steel-Aluminum Composite Material Subjected to Rolling Contact Fatigue

“…This can be handled with a combination of different metallic materials through tailored forming (TF). However, the manufacturing of those mechanical elements may pose difficulties, because material properties can be changed due to structural changes or pore formation in heat-affected zones during the production of semifinished products [9]. To take on the challenge, a novel process chain was developed within the CRC 1153 via TF, with which a hybrid angular ball bearing bushing can be manufactured (see Figure Figure 1).…”

The Process of Co-Extrusion – An Analysis

“…In detail OSAKADA and ALCARAZ analyzed the co-extrusion process by the upper bound method. Current works surrounding the challenges of co-extrusion and composite extrusion were published by MISIOLEK [5,6], SCHIKORRA [7], GRITTNER [8], MUELLER [9,10] and POPP [11]. In particular, MUELLER and POPP also performed the co-extrusion of aluminum and magnesium too.…”