Mechanical properties of co-extruded aluminium-steel compounds
| Autor: | O. Golovko, Bernd-Arno Behrens, Anas Bouguecha, Johanna Uhe, Christian Bonk, Susanne Elisabeth Thürer, Christian Klose |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Case hardening Mechanical properties Micro tensile tests 02 engineering and technology Welding Forging law.invention Tensile strength 020901 industrial engineering & automation Tungsten alloys Aluminium law General Materials Science Welding rods Tensile testing Extrusion Chains Joining 021001 nanoscience & nanotechnology Functional surfaces Collaborative research Mechanics of Materials ddc:660 Semi-finished products 0210 nano-technology Tubular steel structures Materials science Process parameters Bonding shear stress Alloy steel Manganese alloys chemistry.chemical_element engineering.material Co-extrusion Intermetallic phasis Intermetallic phases Ultimate tensile strength De-bonding shear stress Upsetting (forming) Konferenzschrift Shear stress Dewey Decimal Classification::600 | Technik::660 | Technische Chemie Mechanical Engineering Chromium Alloys Metallurgy Chromium alloys Binary alloys chemistry engineering Connecting rods Case hardening steels Aluminum |
| Zdroj: | Key Engineering Materials 742 (2017) |
| Popis: | Within the scope of the Collaborative Research Centre (CRC) 1153 novel process chains for the production of hybrid solid components by Tailored Forming are developed at the Leibniz Universität Hannover. The combination of e. g. aluminium with steel allows to produce hybrid compounds with wear-resistant functional surfaces and reduced weight. In these process chains, joining takes place as the first step to produce hybrid semi-finished products by friction welding, cladding, ultrasonic assisted laser welding or co-extrusion, which are subsequently subjected to various forming processes such as forging or impact extrusion. The coaxially joined hybrid semifinished components investigated in this work were produced by means of the lateral angular co-extrusion (LACE) process using the aluminium alloy EN AW-6082 and the case-hardening steel 20MnCr5. These semi-finished products shall be suited to produce hybrid bearing bushings by die forging in a subsequent process step. Initial investigations for the determination of the process parameters and the appropriate tool geometry were made using a steel rod. In future investigations, a steel tube will replace the steel rod in order to produce hybrid semi-finished products, which can be fully integrated into the process chain. The mechanical properties of the profile were determined at different positions along its length. For this purpose, the quality of the joining zone between aluminium and steel as a function of the profile position was examined by means of push-out tests. Moreover, the mechanical properties of the aluminium component's longitudinal weld seam were determined by micro-tensile-tests. © 2017 Trans Tech Publications, Switzerland. |
| Databáze: | OpenAIRE |
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