A systems engineering analysis of tailored formed metallic hybrids
- PDF / 3,115,881 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 67 Downloads / 165 Views
PRODUCTION PROCESS
A systems engineering analysis of tailored formed metallic hybrids Bruno Buchmayr1 Received: 14 September 2020 / Accepted: 9 November 2020 © German Academic Society for Production Engineering (WGP) 2020
Abstract Joining of dissimilar materials using bulk forming processes is a powerful technique to combine specific properties of the materials used. There are manifold processes which are capable to produce high performance dissimilar joints by forming. The type and degree of deformation at the interface, the type of surface preparation as well as the metallurgical fit and the forming temperature are the most important parameters to achieve a sound metallic bonding. The underlying processes at the interface and the influencing factors to get a strong/deformable hybrid are discussed. Furthermore, suitable materials combinations are considered from a metallurgical point of view. Related problems due to the different material characteristics and microstructural changes during joining and after post-forming heat treatment are also treated in detail. The wide range of applicable processes used are compared regarding their pros and cons. Solid state joining does not mean welding a priori but can also be assigned to forming. Typical and more advanced applications of tailored formed hybrids are enumerated, which demonstrate the high potential of this innovative technology. Keywords Cohesive bonding · Multilayer laminate · Dissimilar joint · Hybrid · Solid-state joining
1 Introduction High performance components require quite often a multimaterial approach to get optimal service properties [1, 2]. Specific requirements, local adjustments or combinations of divergent properties can rarely be done by one alloy. For advanced applications, it has been recognized that i.e. by laminating appropriate material combinations, properties like ductility, fatigue, fracture toughness or corrosion resistance can be greatly enhanced [3, 4]. These composites can increase material efficiency for lightweight construction [2, 5, 6] or can lead to cost reductions. For instance, to mention an example for a material synergy readily used in the industry, structural steel is plated with a thin layer of a nickel based super-alloy for applications in highly corrosive environments [7]. The resulting laminate is both strong and corrosion-resistant, while at the same time cheaper than any monolithic material with comparable properties. Beside laminates, there is also a need for
* Bruno Buchmayr [email protected]; [email protected] 1
Montanuniversitaet Leoben, Leoben, Austria
hybrid solutions using other forming processes or combinations of several processes. The objective of the Collaborative Research Centre 1153 (CRC 1153) “Process chain for the production of hybrid high-performance components through tailored forming”, which forms the focus in this issue, is to realize new ways to produce load-adjusted hybrid solid components by using joined semi-finished workpieces. The fundamental principles to achieve
Data Loading...
