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Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten. Influencing the gradient of material properties by gradation extrusion
| Wulfsberg, J.P.: Progress in Production Engineering : Selected, peer reviewed papers from the 2015 WGP Congress, September 7-8, 2015, Hamburg, Germany Dürnten: Trans Tech Publications, 2015 (Applied mechanics and materials 794) ISBN: 978-3-03835-616-5 (Print) ISBN: 978-3-03859-410-9 (CD-ROM) ISBN: 978-3-0357-0095-4 (eBook) S.166-173 |
| Wissenschaftliche Gesellschaft für Produktionstechnik (WGP Congress) <5, 2015, Hamburg> |
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| Englisch |
| Konferenzbeitrag |
| Fraunhofer IWU () |
| forming; metal; severe plastic deformation |
Abstract
Designing material characteristics by grain refinement using Severe Plastic Deformation (SPD) is an attractive way to create outstanding material properties. This paper presents a unique method which combines SPD and impact extrusion. The extrusion die is designed to create additional material deformation to a defined depth, resulting in a gradient from ultra-fine grained to coarse grained microstructure. Due to the large gradient the method is called gradation extrusion. The paper presents a new analytical calculation method and a numerical evaluation of the strain, showing the relationship between tool design and achievable effects and provides initial experimental results.