Effect of Aging Parameters of EN AW-7021 Aluminium Alloys on Stress Corrosion Cracking

• Autorzy: Boczkal Sonia , Węgrzyn Mateusz , Szymański Wojciech , Bem Jakub , Wala Katarzyna , Płonka Bartłomiej , Leśniak Dariusz , Nowak M.

Identyfikatory

DOI

10.24425/amm.2024.150926

• Języki publikacji: EN

Abstrakty

EN

The main assumption of the conducted research was the selection of appropriate heat treatment parameters to obtain the best possible resistance to stress corrosion cracking (SCC) and the highest strength properties of the extruded profiles. The work selected the temperature and time of one- and two-stage treatment of the EN AW-7021 alloy based on aging curves. Tests carried out for samples after aging at 135°C for 24 h and two-stage aging at 90°C/8 h + 135°C/8 h revealed the highest resistance to SCC. The 7021 alloy, after heat treatment at 90°C/8 h + 135°C/16 h, reached the highest tensile strength of 534 MPa. Transmission electron microscopy (TEM) observations showed slight differences in the finely dispersed nucleoids between the selected parameters of the artificial aging process.

Słowa kluczowe

EN

extruded elements; high-strength aluminium; heat treatment; stress corrosion cracking

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 3
• Strony: 1061--1069
• Opis fizyczny: Bibliogr. 17 poz., fot., rys., tab.

Twórcy

autor

Boczkal Sonia

• Łukasiewicz Research Network - Institute of Non Ferrous Metals, Light Metals Centre, 19 Pilsudskiego Str., 32-050 Skawina, Poland

• https://orcid.org/0000-0002-3421-4723

autor

Węgrzyn Mateusz

• Łukasiewicz Research Network - Institute of Non Ferrous Metals, Light Metals Centre, 19 Pilsudskiego Str., 32-050 Skawina, Poland

• https://orcid.org/0000-0003-4072-1008

autor

Szymański Wojciech

• Łukasiewicz Research Network - Institute of Non Ferrous Metals, Light Metals Centre, 19 Pilsudskiego Str., 32-050 Skawina, Poland

• https://orcid.org/0000-0002-3372-7869

autor

Bem Jakub

• Łukasiewicz Research Network - Institute of Non Ferrous Metals, Light Metals Centre, 19 Pilsudskiego Str., 32-050 Skawina, Poland

• https://orcid.org/0000-0002-2454-3849

autor

Wala Katarzyna

• Łukasiewicz Research Network - Institute of Non Ferrous Metals, Light Metals Centre, 19 Pilsudskiego Str., 32-050 Skawina, Poland

• https://orcid.org/0000-0002-8577-2514

autor

Płonka Bartłomiej

• Łukasiewicz Research Network - Institute of Non Ferrous Metals, Light Metals Centre, 19 Pilsudskiego Str., 32-050 Skawina, Poland

• https://orcid.org/0000-0002-3573-1212

autor

Leśniak Dariusz

• AGH University of Kraków, Faculty of Non-Ferrous Metals, Al . Mickiewicza 30, 30-059 Krakow, Poland

• https://orcid.org/0000-0002-4308-7738

autor

Nowak M.

• Łukasiewicz Research Network - Institute of Non Ferrous Metals, Light Metals Centre, 19 Pilsudskiego Str., 32-050 Skawina, Poland

Bibliografia

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Uwagi

This research was funded by The National Centre for Research and Development, grant number TECHMATSTRATEG2/406439/10/NCBR/2019 “Extrusion welding of high-strength sections from 7XXX series aluminium alloys”. The authors thank Mr. Henryk Jurczak and his colleagues from the Albatros Alumnium company for their help in the implementation of works related to the extrusion process of the 7021 alloy.