Home Mechanical properties of aluminum extruded via the KOBO method with direct and lateral outflow
Article
Licensed
Unlicensed Requires Authentication

Mechanical properties of aluminum extruded via the KOBO method with direct and lateral outflow

  • Włodzimierz Bochniak , Andrzej Korbel , Pawel Ostachowski and Anna Paliborek
Published/Copyright: October 18, 2013
Become an author with De Gruyter Brill
Author Information
International Journal of Materials Research
From the journal International Journal of Materials Research Volume 104 Issue 10

Abstract

Aluminum was extruded via the KOBO method with direct and lateral outflow at ambient temperature with an extrusion ratio of λ = 100, keeping constant extrusion force all the time. Despite the far different metal flow geometries, in both cases products were obtained with very good quality (die shape reflection and surface state) and a slight variation in mechanical properties. It was also found that higher torsion angle of extruded metal lowers their levels.

The results show both the real possibilities of conducting the extrusion process with lateral outflow, as well as a successive argument supporting the concept of superplastic flow of metal in the KOBO process.

Keywords:: KOBO method; Direct and lateral extrusion; Aluminum product; Mechanical properties; Deformation mechanism
* Correspondence address, Mr. Pawel Ostachowski, AGH – University of Science and Technology, Faculty of Non-Ferrous Metals, Department of Structure and Mechanics of Solids, A. Mickiewicza Av. 30, 30 – 059 Cracow, Poland, Tel.: +48 12 617 26 52, Fax: +48 12 632 56 15, E-mail:

References

[1] A.Korbel, W.Bochniak: European Patent No0711210, U.S. Patent No573959.Search in Google Scholar

[2] W.Bochniak, K.Marszowski, A.Korbel: J. Mater. Proc. Technol.169 (2005) 44. 10.1016/j.jmatprotec.2005.02.258Search in Google Scholar

[3] A.Korbel, W.Bochniak, P.Ostachowski, L.Błaż: Metall. Mat. Trans. A42 (2011) 2881. 10.1007/s11661-011-0688-xSearch in Google Scholar

[4] A.Korbel, J.Pospiech, W.Bochniak, A.Tarasek, P.Ostachowski, J.Bonarski: Int. J. Mater. Res.102 (2011) 464. 10.3139/146.110490Search in Google Scholar

[5] A.Brzostowicz, A.Korbel, W.Bochniak, L.Błaż, W.Suder: Rudy i Metale Nieżelazne54 (2009) 663.Search in Google Scholar

[6] P.Ostachowski, A.Korbel, W.Bochniak: Rudy i Metale Nieżelazne54 (2009) 707.Search in Google Scholar

[7] N.Hashimoto, T.S.Byun, K.Farrell, S.J.Zinkle: J. Nucl. Mater.329–333 (2004) 947. 10.1016/j.jnucmat.2004.04.063Search in Google Scholar

[8] O.V.Borodin, V.V.Bryk, A.S.Kalachenko, I.M.Neklyudov, A.A.Parkhomenko, V.N.Voyerodin: J. Nucl. Mater.329–333 (2004) 630. 10.1016/j.jnucmat.2004.04.101Search in Google Scholar

[9] A.Korbel, W.Bochniak, H.Dybiec, K.Kurzydłowski: Method of angular extrusion of product especially from metals, Patent application No P–388159 (01.06.2009).Search in Google Scholar

[10] W.Bochniak, P.Ostachowski, A.Korbel, K.Pieła: Mater. Sci. Forum667–669 (2011) 1039. 10.4028/www.scientific.net/MSF.667-669.1039Search in Google Scholar

[11] A.Korbel, W.Bochniak, A.Paliborek, P.Ostachowski, M.Łagoda: The effects of geometrically redundant cyclic deformation imposed in strain path change scheme on monotonic deformation aluminum, subm. for publication in Phil. Mag.Search in Google Scholar

[12] A.Korbel, W.Bochniak: Lüders deformation and superplastic flow of metals, accepted for publication Phil. Mag. (2013), ref. No. TPHM 765977.Search in Google Scholar

Received: 2012-10-10
Accepted: 2013-5-4
Published Online: 2013-10-18
Published in Print: 2013-10-10

© 2013, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Martensite–austenite transformation kinetics of high Cr ferritic heat-resistant steel
  5. Ageing texture of hot rolled and solution treated Ti–Nb alloys
  6. Artificial aging of thixocast ZA27 alloy and particulate ZA27/SiCp composites
  7. Low cycle fatigue behavior under asymmetric loading of two AZ31B magnesium alloys with different microstructures and textures
  8. Mechanical properties of aluminum extruded via the KOBO method with direct and lateral outflow
  9. Hot compression deformation of an Mg–2.54Nd–0.26Zn–0.32Zr alloy
  10. Evaluation of the sliding performance of polyamide, poly-oxy-methylene and their composites
  11. Corrosion behaviour of AISI 204Cu and AISI 304 stainless steels in simulated pore solution
  12. Comparing the corrosion behavior of nanograined and coarse-grained interstitial free steels
  13. Electrochemical investigation of the effect of different laser surface treatments on Hastelloy G alloy
  14. Influence of sputtering gas pressure on properties of transparent conducting Si-doped zinc oxide films
  15. Cu2SnS3 absorber thin films prepared via successive ionic layer adsorption and reaction method
  16. Nano preparation of Dy3+ substituted ceria via urea-formaldehyde gel combustion route
  17. Short Communications
  18. Preparation of ZrB2-based nanocomposites with limited grain growth by means of low-temperature hot-pressing using Cu additive
  19. Combustion synthesis of Ti2SC
  20. People
  21. Prof. Dr. Tomaž Kosmač
  22. DGM News
  23. DGM News
https://doi.org/10.3139/146.110953
Keywords for this article
KOBO method; Direct and lateral extrusion; Aluminum product; Mechanical properties; Deformation mechanism

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Martensite–austenite transformation kinetics of high Cr ferritic heat-resistant steel
  5. Ageing texture of hot rolled and solution treated Ti–Nb alloys
  6. Artificial aging of thixocast ZA27 alloy and particulate ZA27/SiCp composites
  7. Low cycle fatigue behavior under asymmetric loading of two AZ31B magnesium alloys with different microstructures and textures
  8. Mechanical properties of aluminum extruded via the KOBO method with direct and lateral outflow
  9. Hot compression deformation of an Mg–2.54Nd–0.26Zn–0.32Zr alloy
  10. Evaluation of the sliding performance of polyamide, poly-oxy-methylene and their composites
  11. Corrosion behaviour of AISI 204Cu and AISI 304 stainless steels in simulated pore solution
  12. Comparing the corrosion behavior of nanograined and coarse-grained interstitial free steels
  13. Electrochemical investigation of the effect of different laser surface treatments on Hastelloy G alloy
  14. Influence of sputtering gas pressure on properties of transparent conducting Si-doped zinc oxide films
  15. Cu2SnS3 absorber thin films prepared via successive ionic layer adsorption and reaction method
  16. Nano preparation of Dy3+ substituted ceria via urea-formaldehyde gel combustion route
  17. Short Communications
  18. Preparation of ZrB2-based nanocomposites with limited grain growth by means of low-temperature hot-pressing using Cu additive
  19. Combustion synthesis of Ti2SC
  20. People
  21. Prof. Dr. Tomaž Kosmač
  22. DGM News
  23. DGM News
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 16.11.2025 from https://www.degruyterbrill.com/document/doi/10.3139/146.110953/pdf
Scroll to top button