The Effect of Welding Parameters on the Microstructure and Mechanical Properties of Friction Stir Welded AA 7075
Abstract
In this study, aluminum alloy 7075 (AA 7075) has been friction stir welded by using three different rotation speeds and two different welding speeds. The aim is to determine the optimum welding parameters concerning these two variables for AA 7075. Microstructural examination, hardness measurements and room temperature tensile tests have been carried out in order to determine the optimum combination. The results show that higher rotation speeds have yielded higher mechanical properties. Some porosity has been obtained for the lowest rotation speed.
Kurzfassung
In der vorliegenden Arbeit wird die Aluminium-legierung 7075 (AA 7075) durch Rührreibschweißen mit drei unterschiedlichen Rotationsgeschwindigkeiten und zwei unterschiedlichen Schweißgeschwindigkeiten gefügt. Das Ziel ist die Bestimmung der optimalen Schweißparameter für diese beiden Variablen bei AA 7075. Durchgeführt wurden Gefügeuntersuchungen, Härtemessungen und Zugversuche bei Raumtemperatur zur Bestimmung der optimalen Kombination. Das Ergebnis zeigt, dass höhere Rotationsgeschwindigkeiten bessere mechanische Eigenschaften hervorbringen. Bei der geringsten Rotationsgeschwindigkeit zeigte sich eine geringe Porosität.
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Articles in the same Issue
- Contents/Inhalt
- Inhalt / Contents
- Technical Contributions/Fachbeiträge
- The Effect of Welding Parameters on the Microstructure and Mechanical Properties of Friction Stir Welded AA 7075
- Metallurgical Investigation of Defects in Super Alloy 718 Mill Forms Intended for Aerongine Applications
- Ringversuch Probenpräparation einer gespritzten Multifunktionsschicht auf CFC-Substrat
- Materialographic Report/Bericht aus der Materialographie
- Arbeitskreis “Ausbildung” im Fachausschuss Materialographie der DGM
Articles in the same Issue
- Contents/Inhalt
- Inhalt / Contents
- Technical Contributions/Fachbeiträge
- The Effect of Welding Parameters on the Microstructure and Mechanical Properties of Friction Stir Welded AA 7075
- Metallurgical Investigation of Defects in Super Alloy 718 Mill Forms Intended for Aerongine Applications
- Ringversuch Probenpräparation einer gespritzten Multifunktionsschicht auf CFC-Substrat
- Materialographic Report/Bericht aus der Materialographie
- Arbeitskreis “Ausbildung” im Fachausschuss Materialographie der DGM