Sajadifar, Seyedvahid ; Suckow, Timon ; Chandra, Caroline Karina ; Heider, Ben ; Heidarzadeh, Akbar ; Zavasnik, Janez ; Reitz, Rüdiger ; Oechsner, Matthias ; Groche, Peter ; Niendorf, Thomas (2023)
Assessment of the impact of process parameters on the final material properties in forming of EN AW 7075 employing a simulated forming process.
In: Journal of Manufacturing Processes, 86
doi: 10.1016/j.jmapro.2022.12.056
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The impacts of various thermo-mechanical process routes in forming of EN AW 7075 alloy on mechanical properties, microstructure and corrosion resistance were investigated. A simulated forming process of two very different conditions, i.e., T6 and W-Temper is the focus of the present study. Irrespective of soaking time and pre- deformation, specimens quenched in water exhibited superior mechanical properties compared to air-cooled ones. A shorter solution heat-treatment soaking time in the pre-deformed condition, i.e., T6-Temper, caused a drop in the elongation at fracture. Microstructural analysis revealed, regardless of pre-deformation and soaking time, a high fraction of fine n' strengthening precipitates with stoichiometry close to MgZn upon artificial ageing in the specimens quenched in water. Mechanical properties and microstructural evolution indicate that pre- deformation of solution heat treated specimens before the ageing treatment, i.e., W-Temper, leads to disloca- tion multiplication and, eventually, further nucleation sites for precipitation. Thus, forming the W-Temper condition caused very similar resulting mechanical properties and microstructure compared to that of the T6 condition. However, W-Temper forming was found to be detrimental for stress corrosion cracking. Corrosion behaviour of air-cooled specimens was found to be very poor in general. Results obtained in the present work can facilitate the development of thermo-mechanical process routes for EN AW 7075 to eventually tailor mechanical properties, corrosion behaviour and microstructure.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Sajadifar, Seyedvahid ; Suckow, Timon ; Chandra, Caroline Karina ; Heider, Ben ; Heidarzadeh, Akbar ; Zavasnik, Janez ; Reitz, Rüdiger ; Oechsner, Matthias ; Groche, Peter ; Niendorf, Thomas |
| Art des Eintrags: | Bibliographie |
| Titel: | Assessment of the impact of process parameters on the final material properties in forming of EN AW 7075 employing a simulated forming process |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Manufacturing Processes |
| Jahrgang/Volume einer Zeitschrift: | 86 |
| DOI: | 10.1016/j.jmapro.2022.12.056 |
| URL / URN: | https://www.sciencedirect.com/science/article/abs/pii/S15266... |
| Kurzbeschreibung (Abstract): | The impacts of various thermo-mechanical process routes in forming of EN AW 7075 alloy on mechanical properties, microstructure and corrosion resistance were investigated. A simulated forming process of two very different conditions, i.e., T6 and W-Temper is the focus of the present study. Irrespective of soaking time and pre- deformation, specimens quenched in water exhibited superior mechanical properties compared to air-cooled ones. A shorter solution heat-treatment soaking time in the pre-deformed condition, i.e., T6-Temper, caused a drop in the elongation at fracture. Microstructural analysis revealed, regardless of pre-deformation and soaking time, a high fraction of fine n' strengthening precipitates with stoichiometry close to MgZn upon artificial ageing in the specimens quenched in water. Mechanical properties and microstructural evolution indicate that pre- deformation of solution heat treated specimens before the ageing treatment, i.e., W-Temper, leads to disloca- tion multiplication and, eventually, further nucleation sites for precipitation. Thus, forming the W-Temper condition caused very similar resulting mechanical properties and microstructure compared to that of the T6 condition. However, W-Temper forming was found to be detrimental for stress corrosion cracking. Corrosion behaviour of air-cooled specimens was found to be very poor in general. Results obtained in the present work can facilitate the development of thermo-mechanical process routes for EN AW 7075 to eventually tailor mechanical properties, corrosion behaviour and microstructure. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Produktionstechnik und Umformmaschinen (PtU) |
| Hinterlegungsdatum: | 08 Feb 2023 07:17 |
| Letzte Änderung: | 08 Feb 2023 07:17 |
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