Aufsatz
Artikel (Publikationen im Open Access gefördert durch die UB)
Cooling rate as a process parameter in advanced roll forming to tailor microstructure,mechanical and corrosion properties of EN AW 7075 tubes
(Abkühlgeschwindigkeit als Prozessparameter beim fortgeschrittenen Walzprofilieren zur Anpassung von Gefüge, mechanischen und Korrosionseigenschaften von EN AW 7075-Rohren)
Abstract
The effects of solution heat treatment parameters and quench media as a processing tool for tailoring microstructure, mechanical and corrosion properties in roll forming of EN AW 7075 alloy were studied. The highest yield stress and ultimate tensile strength were obtained for the specimens quenched in water, while the air-cooled specimens exhibited inferior mechanical properties. Microstructural analysis of specimens showed that except water-quenched specimens, the parts cooled/quenched in oil, in direct contact with tool steel and air are characterized by coarse precipitates and precipitate-free zones. The corrosion tests showed that the cooling rate has a pronounced influence on the corrosion resistance and related mechanism of EN AW 7075 alloy. The surfaces of specimens quenched in water remained intact although pitting corrosion took place. The microstructure of the part processed by roll forming was explored in direct comparison. It is revealed that by the employment of quenching nozzles, a high cooling rate similar to the water-quenched condition can be achieved. Results obtained in the present study pave the way to directly tailor aluminum parts for specific applications.
Citation
In: Materials Sciene and Engineering Technology : Materialwissenschaft und Werkstofftechnik Volume 53 / Issue 12 (2022-12-14) , S. 1479-1493 ; eissn:1521-4052Sponsorship
Gefördert im Rahmen des Projekts DEALCollections
Publikationen (Fachgebiet Metallische Werkstoffe)Artikel (Publikationen im Open Access gefördert durch die UB)
Citation
@article{doi:10.17170/kobra-202301047299,
author={Sajadifar, Seyed Vahid and Suckow, Till and Heider, Ben and Oechsner, Matthias and Groche, Peter and Niendorf, Thomas},
title={Cooling rate as a process parameter in advanced roll forming to tailor microstructure,mechanical and corrosion properties of EN AW 7075 tubes},
journal={Materials Sciene and Engineering Technology : Materialwissenschaft und Werkstofftechnik},
year={2022}
}
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2023-01-04T13:32:10Z 2023-01-04T13:32:10Z 2022-12-14 doi:10.17170/kobra-202301047299 http://hdl.handle.net/123456789/14330 Gefördert im Rahmen des Projekts DEAL eng Namensnennung-Nicht-kommerziell 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ corrosion behavior heat treatment microstructure fracture high-strength aluminum alloys Hochfeste Aluminiumlegierungen Korrosionsverhalten Wärmebehandlung Gefüge Bruch 620 Cooling rate as a process parameter in advanced roll forming to tailor microstructure,mechanical and corrosion properties of EN AW 7075 tubes Aufsatz The effects of solution heat treatment parameters and quench media as a processing tool for tailoring microstructure, mechanical and corrosion properties in roll forming of EN AW 7075 alloy were studied. The highest yield stress and ultimate tensile strength were obtained for the specimens quenched in water, while the air-cooled specimens exhibited inferior mechanical properties. Microstructural analysis of specimens showed that except water-quenched specimens, the parts cooled/quenched in oil, in direct contact with tool steel and air are characterized by coarse precipitates and precipitate-free zones. The corrosion tests showed that the cooling rate has a pronounced influence on the corrosion resistance and related mechanism of EN AW 7075 alloy. The surfaces of specimens quenched in water remained intact although pitting corrosion took place. The microstructure of the part processed by roll forming was explored in direct comparison. It is revealed that by the employment of quenching nozzles, a high cooling rate similar to the water-quenched condition can be achieved. Results obtained in the present study pave the way to directly tailor aluminum parts for specific applications. open access Abkühlgeschwindigkeit als Prozessparameter beim fortgeschrittenen Walzprofilieren zur Anpassung von Gefüge, mechanischen und Korrosionseigenschaften von EN AW 7075-Rohren Sajadifar, Seyed Vahid Suckow, Till Heider, Ben Oechsner, Matthias Groche, Peter Niendorf, Thomas 1479-1493 doi:10.1002/mawe.202200116 Korrosion Aluminiumlegierung Profilwalzen Wärmebehandlung publishedVersion eissn:1521-4052 Issue 12 Materials Sciene and Engineering Technology : Materialwissenschaft und Werkstofftechnik 1479-1493 Volume 53 false
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