Investigating the Influence of Process Parameters on the Mechanical Properties of Extruded Aluminum Tubes by Cyclic Indentation Tests
| Autor: | Hans Jürgen Maier, David Görzen, Christian Klose, Tilmann Beck, Bastian Blinn, Florian Patrick Schäfke |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Alloy cyclic hardening potential chemistry.chemical_element 02 engineering and technology engineering.material 01 natural sciences law.invention Optical microscope Aluminium law Indentation 0103 physical sciences extruded Al tubes General Materials Science Composite material 010302 applied physics Mining engineering. Metallurgy Manufacturing process Metals and Alloys TN1-997 021001 nanoscience & nanotechnology Microstructure chemistry engineering Hardening (metallurgy) Extrusion 0210 nano-technology cyclic indentation test PhyBaLCHT |
| Zdroj: | Metals Volume 11 Issue 5 Metals, Vol 11, Iss 744, p 744 (2021) |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met11050744 |
| Popis: | Given the complex process condition, extruded aluminum (Al) alloy tubes show locally pronounced differences in microstructure and mechanical properties, which can be influenced by subsequent heat treatment. In the present study, cyclic indentation tests (CITs) were conducted on extruded Al alloy EN AW-6082 to locally determine hardness and cyclic hardening potential, which was complemented with light optical microscopy. To analyze the influence of extrusion process and subsequent heat treatment, the EN AW-6082 tubes investigated were manufactured with extrusion ratios Ψ of 13:1 and 22:1, both in as-extruded and T6 heat-treated conditions. The results obtained for the as-extruded state showed significant differences of the local mechanical properties and demonstrated that an increased Ψ leads to higher hardness, caused by more pronounced plastic deformation during the manufacturing process. Moreover, an increase of hardness and cyclic hardening potential was observed after a T6 heat treatment, which also reduced the difference in hardness between the different extrusion ratios. Additionally, the pronounced local differences in hardness and cyclic hardening potential correlated with the local microstructure. The results demonstrated that CITs enable the analysis of local mechanical properties of extruded EN AW-6082 profiles, resulting from different extrusions ratios as well as subsequent heat treatment. |
| Databáze: | OpenAIRE |
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