Skip to main content
Log in

Effect of aging temperature and of retrogression treatment time on the microstructure and mechanical properties of alloy AA 7075

  • Published:
Metal Science and Heat Treatment Aims and scope

Abstract

Alloy AA 7075-T6 is studied after retrogression and re-aging. The retrogression heat treatment is performed at various temperatures and hold times, and subsequent aging is performed at 130°C for 12 h. The microstructure and mechanical properties of the alloy are studied depending on the temperature and the hold time of the retrogression heat treatment. Electron microscopic studies are preformed and mechanical characteristics are determined in tensile and impact tests. The HRB microhardness is measured.

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

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. N. Q. Chinh, J. Lendvai, D. H. Ping, and K. Hono, “The effect of Cu on the mechanical properties of Al-Zn-Mg Alloys,” J. Alloys Comp., 378, 52–60 (2004).

    Article  CAS  Google Scholar 

  2. A. Deschamps, M. Niewczas, F. Bley, et al., “Low temperature dynamic precipitation in a supersaturated Al-Zn-Mg alloy and related stain hardening,” Philos. Mag., A79(10), 2485–2504 (1999).

    Google Scholar 

  3. L. Dong-Woo, L. Sang-Yong, L. Kyong-Hwan, et al., “Microstructure evolution of Al-Zn-Cu-(Sc) alloy during hot extrusion and heat treatment,” J. Mater. Proc. Technol., 155–156, 1330–1336 (2004).

    Google Scholar 

  4. D. Dumont, A. Deschamps, and Y. Brecht, “On the relationship between microstructure, strength and toughness in AA 7050 aluminum alloy,” Mater. Sci. Eng., A350, 326–336 (2003).

    Google Scholar 

  5. R. Ferragut, A. Somoza, A. Tolley, and I. Torriani, “Precipitation kinetics in Al-Zn-Mg commercial alloys,” J. Mater. Proc. Technol., 141, 35–40 (2003).

    Article  CAS  Google Scholar 

  6. A. Fjeldy, A. Sqreng, and H. J. Roven, “Strain localization in solution heat treated Al-Zn-Mg alloys,” Mater. Sci. Eng., A300, 165–170 (2001).

    Google Scholar 

  7. R. J. Flynn and J. S. Robinson, “The aplication of advances in quench factor analysis property prediction to the heat treatment of 7010 aluminium alloy,” J. Mater. Technol., 153–154, 674–680 (2004).

    Article  Google Scholar 

  8. L. Sang-Yong, L. Kung-Hwan, and L. Young-Seon, “Characterization of Al 7075 alloys after cold working and heating in the semi-solid temperature range,” J. Mater. Proc. Technol., 111, 42–47 (2001).

    Article  Google Scholar 

  9. Gang Sha and A. Cezero, “Early-stage precipitation in Al-Zn-Mg-Cu alloy (7075),” Acta Mater., 52, 4503–4516 (2004).

    Article  CAS  Google Scholar 

  10. K. Stiller, P. J. Warren, V. Hansen, et al., “Investigation of precipitation in an Al-Zn-Mg alloy after two-step ageing treatment at 100°C and 150°C,” Mater. Sci. Eng., A270, 55–63 (1999).

    CAS  Google Scholar 

  11. C. Wolverton, “Crystal structure and stability of complex precipitate phases in Al-Cu-Mg-(Si) and Al-Zn-Mg alloys,” Acta Mater., 49, 3129–3142 (2001).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

__________

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 20–24, September, 2007.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Karaaslan, A., Kaya, I. & Atapek, H. Effect of aging temperature and of retrogression treatment time on the microstructure and mechanical properties of alloy AA 7075. Met Sci Heat Treat 49, 443–447 (2007). https://doi.org/10.1007/s11041-007-0083-9

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11041-007-0083-9

Keywords

Navigation