Skip to main content
SpringerLink
Log in

Effect of Equal-Channel Angular Pressing and Targeted Heat Treatment on Aluminum AA7075 Sheet Metal

  • Conference paper
  • First Online:
Characterization of Minerals, Metals, and Materials 2022

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

In this study, equal-channel angular pressing (ECAP) was used to improve the mechanical properties of Aluminum AA7075 sheet metal. Various approaches were tested for ECAP route C, involving either channel geometry, forming temperature, or post-treatment time. The specimens were evaluated by tensile testing and compared with reference specimens in artificially aged T6 conditions. The goal was to optimize the time- and energy-consuming artificial aging procedure. The results show that a 75% reduction in artificial aging time still leads to an increase in yield strength due to ECAP. In addition, the elongation at fracture is strongly influenced by ECAP. Furthermore, tensile tests were performed on a resistance-heated test bench to determine its potential for hot forming processes. These results show that the use of ECAP with sheet metal enables efficient production of high-strength aluminum and thus contributes to a more sustainable production.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Log in via an institution
Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 229.00
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 299.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 299.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. Jaeger H, Gude M (2019) Lightweight materials in tomorrow’s automotive industry. Lightweight Des Worldwide 12:20–23. https://doi.org/10.1007/s41777-019-0065-9

  2. Tisza M, Czinege I (2018) Comparative study of the application of steels and aluminium in lightweight production of automotive parts. Int J Lightweight Mater Manuf 1(4):229–238. https://doi.org/10.1016/j.ijlmm.2018.09.001

    Article  Google Scholar 

  3. Sajadifar SV, Scharifi E, Weidig U, Steinhoff K, Niendorf T (2020) Performance of thermo-mechanically processed AA7075 alloy at elevated temperatures—from microstructure to mechanical properties. Metals 10(7):884. https://doi.org/10.3390/met10070884

    Article  CAS  Google Scholar 

  4. Noder J, George R, Butcher C, Worswick MJ (2021) Friction characterization and application to warm forming of a high strength 7000-series aluminum sheet. J Mater Process Technol 293(38):e117066. https://doi.org/10.1016/j.jmatprotec.2021.117066

  5. Kilic S, Kacar I, Sahin M, Ozturk F, Erdem O (2019) Effects of aging temperature, time, and pre-strain on mechanical properties of AA7075. Mat Res 22(5):4273. https://doi.org/10.1590/1980-5373-mr-2019-0006

    Article  CAS  Google Scholar 

  6. Omer K et al (2018) Process parameters for hot stamping of AA7075 and D-7xxx to achieve high performance aged products. J Mater Process Technol 257:170–179. https://doi.org/10.1016/j.jmatprotec.2018.02.039

    Article  CAS  Google Scholar 

  7. Bruder E (2019) Formability of ultrafine grained metals produced by severe plastic deformation-an overview. Adv Eng Mater 21(1):1–18. https://doi.org/10.1002/adem.201800316

    Article  CAS  Google Scholar 

  8. Wagner MF-X, Nostitz N, Frint S, Frint P, Ihlemann J (2020) Plastic flow during equal-channel angular pressing with arbitrary tool angles. Int J Plast 134. https://doi.org/10.1016/j.ijplas.2020.102755

  9. Iwahashi Y, Furukawa M, Horita Z, Nemoto M, Langdon TG (1998) Microstructural characteristics of ultrafine-grained aluminum produced using equal-channel angular pressing. Metall Mater Trans A 29A:2245–2252

    Google Scholar 

  10. Suh J et al (2014) Improvement of ductility at room temperature of Mg-3Al-1Zn alloy sheets processed by equal channel angular pressing. Proc Eng 81(2):1517–1522. https://doi.org/10.1016/j.proeng.2014.10.183

    Article  CAS  Google Scholar 

  11. Gruber M, Illgen C, Frint P, Wagner MF-X, Volk W (2019) Numerical and experimental study on ECAP-processing parameters for efficient grain refinement of AA5083 sheet metal. KEM 794:315–323. https://doi.org/10.4028/www.scientific.net/KEM.794.315

    Article  Google Scholar 

  12. Illgen C, Frint P, Gruber M, Volk W, Wagner MF-X (2020) Evolution of grain refinement in AA5083 sheet metal processed by ECAP. In: Light metals. The minerals, metals and materials series. Springer International Publishing, Cham, pp 362–369

    Google Scholar 

  13. Gruber M, Yang Y, Illgen C, Frint P, Wagner MF-X, Volk W (2021) Thermomechanical analysis and experimental validation of ECAP for aluminum sheet metal. In: Forming the future. The minerals, metals and materials series. Springer International Publishing, Cham, pp 1775–1790

    Google Scholar 

  14. Frint P, Wagner MF-X, Weber S, Seipp S, Frint S, Lampke T (2017) An experimental study on optimum lubrication for large-scale severe plastic deformation of aluminum-based alloys. J Mater Process Technol 239:222–229. https://doi.org/10.1016/j.jmatprotec.2016.08.032

    Article  CAS  Google Scholar 

  15. DIN 50125 (2004) Prüfung metallischer Werkstoffe – Zugproben

    Google Scholar 

  16. DIN EN ISO 6892-1 (2014) Metallische Werkstoffe – Zugversuch – Teil 1: Prüfverfahren bei Raumtemperatur

    Google Scholar 

  17. Zhao YH, Liao XZ, Jin Z, Valiev RZ, Zhu YT (2004) Microstructures and mechanical properties of ultrafine grained 7075 Al alloy processed by ECAP and their evolutions during annealing. Acta Mater 52(15):4589–4599. https://doi.org/10.1016/j.actamat.2004.06.017

    Article  CAS  Google Scholar 

  18. Gerhardt KW (2015) Untersuchungen zur konduktiven Erwärmung für Warmzugversuche an Blechen. Dissertation, Shaker Verlag GmbH

    Google Scholar 

  19. Müller K (1999) Werkstoffkundliche Qualifizierung des Randschichthärtens mit Laserstrahlung. Dissertation, Fakultät für Angewandte Naturwissenschaften, Universität Bayreuth

    Google Scholar 

  20. Fritsch S, Hockauf M, Schönherr R, Hunger S, Meyer LW, Wagner MF-X (2010) Untersuchungen zum Einfluss von ECAP und Tieftemperaturwalzen auf die mechanischen Eigenschaften der Aluminiumlegierung 7075. Mat Werkstofftech 41(9):697–703. https://doi.org/10.1002/mawe.201000655

    Article  CAS  Google Scholar 

  21. Iwahashi Y, Wang J, Horita Z, Nemoto M, Langdon TG (1996) Principle of equal-channel angular pressing for the processing of ultra-fine grained materials. Scripta Mater 35(2):143–146

    Article  CAS  Google Scholar 

  22. Thevenet D, Mliha-Touati M, Zeghloul A (1999) The effect of precipitation on the Portevin-Le Chatelier effect in an Al–Zn–Mg–Cu alloy. Mater Sci Eng A 266:175–182

    Article  Google Scholar 

  23. Shaeri MH, Salehi MT, Seyyedein SH, Abutalebi MR, Park JK (2014) Microstructure and mechanical properties of Al-7075 alloy processed by equal channel angular pressing combined with aging treatment. Mater Des 57(4):250–257. https://doi.org/10.1016/j.matdes.2014.01.008

  24. Cardoso KR, Travessa DN, Botta WJ, Jorge AM (2011) High strength AA7050 Al alloy processed by ECAP: microstructure and mechanical properties. Mater Sci Eng A 528(18):5804–5811. https://doi.org/10.1016/j.msea.2011.04.007

  25. Shaeri MH, Shaeri M, Salehi MT, Seyyedein SH, Abutalebi MR (2015) Effect of equal channel angular pressing on aging treatment of Al-7075 alloy. Progress Natl Sci Mater Int 25(2):159–168. https://doi.org/10.1016/j.pnsc.2015.03.005

  26. Vitzthum S, Hartmann C, Eder M, Volk W (2019) Temperature-based determination of the onset of yielding using a new clip-on device for tensile tests. Proc Manuf 29(1):490–497. https://doi.org/10.1016/j.promfg.2019.02.166

  27. DIN EN ISO 6892-2 (2011) Metallische Werkstoffe - Zugversuch - Teil 2: Prüfverfahren bei erhöhter Temperatur

    Google Scholar 

  28. Shojaei K, Sajadifar SV, Yapici GG (2016) On the mechanical behavior of cold deformed aluminum 7075 alloy at elevated temperatures. Mater Sci Eng A 670:81–89. https://doi.org/10.1016/j.msea.2016.05.113

  29. Zhou M, Lin YC, Deng J, Jiang Y-Q (2014) Hot tensile deformation behaviors and constitutive model of an Al–Zn–Mg–Cu alloy. Mater Des 59:141–150. https://doi.org/10.1016/j.matdes.2014.02.052

  30. Langdon TG (1982) The mechanical properties of superplastic materials. Metall Trans A 13A:689–701

    Google Scholar 

  31. Illgen C, Bohne B, Wagner MF-X, Gruber M, Volk W, Frint P (2021) Facing the issues of sheet metal equal‐channel angular pressing: a modified approach using stacks to produce ultrafine‐grained high ductility AA5083 sheets. Adv Eng Mater 1:2100244. https://doi.org/10.1002/adem.202100244

Download references

Acknowledgements

The authors gratefully acknowledge the funding by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) in supporting this work within the framework of the collaborative research projects VO 1487/32-2 and WA 2602/13-2. A big thank you also goes to Philipp Leitner and Gylxhane Maqedonci, who contributed to the control of the heated tensile test in their student research projects.

Author information

Authors and Affiliations

  1. Chair of Metal Forming and Casting, Technical University of Munich, Walther-Meissner-Str. 4, 85748, Garching, Germany

    Maximilian Gruber, Thomas Spoerer, Philipp Lechner & Wolfram Volk

  2. Institute of Materials Science and Engineering, Chemnitz University of Technology, Erfenschlager Str. 73, 09125, Chemnitz, Germany

    Christian Illgen, Philipp Frint & Martin F.-X. Wagner

Authors
  1. Maximilian Gruber
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Thomas Spoerer
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Christian Illgen
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Philipp Frint
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Martin F.-X. Wagner
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Philipp Lechner
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. Wolfram Volk
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Maximilian Gruber .

Editor information

Editors and Affiliations

  1. Wood Mackenzie, Chicago, IL, USA

    Mingming Zhang

  2. CanmetMATERIALS, Hamilton, ON, Canada

    Jian Li

  3. Michigan Technological University, Houghton, MI, USA

    Bowen Li

  4. Military Institute of Engineering, Rio De Janeiro, Brazil

    Sergio Neves Monteiro

  5. Amman, Jordan

    Shadia Ikhmayies

  6. Middle East Technical University, Ankara, Turkey

    Yunus Eren Kalay

  7. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  8. University of New South Wales, Canberra, ACT, Australia

    Juan P. Escobedo-Diaz

  9. Los Alamos National Laboratory, Los Alamos, NM, USA

    John S. Carpenter

  10. United States Army Research Laboratory, Abingdon, MD, USA

    Andrew D. Brown

  11. Eurofins EAG, Materials Science, LLC, Liverpool, NY, USA

    Rajiv Soman

  12. Central South University, Changsha, China

    Zhiwei Peng

Rights and permissions

Reprints and permissions

Copyright information

© 2022 The Minerals, Metals & Materials Society

About this paper

Check for updates. Verify currency and authenticity via CrossMark

Cite this paper

Gruber, M. et al. (2022). Effect of Equal-Channel Angular Pressing and Targeted Heat Treatment on Aluminum AA7075 Sheet Metal. In: Zhang, M., et al. Characterization of Minerals, Metals, and Materials 2022. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-92373-0_3

Download citation

Publish with us

Policies and ethics

Search

Navigation