Skip to main content
SpringerLink
Log in

Creep rupture of alloy 718 after thermal aging

  • Research Summary
  • Thermal Stability
  • Published:
JOM Aims and scope Submit manuscript

Abstract

Alloy 718 given the conventional 718/621°C age-hardening treatment was thermally aged at 593°C, 621°C, and 649°C for up to 50,000 h. These temperatures bracket the lowest of the duplex age-hardening temperatures. Subsequent creep-rupture tests conducted at the same temperature of thermal aging show no detrimental effects of 593°C aging after 50,000 h. Material aged for 50,000 h and tested at 621°C shows the rupture life to be approximately 60–65% of the unaged material, but at 649°C, the aged-material rupture life is on the order of 15% of the unaged material.

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

Access this article

Log in via an institution

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

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. J.F. Barker et al., “Long Term Stability of Inconel 718,” J. Metals, 22 (1) (1970), p. 31.

    CAS  Google Scholar 

  2. J.W. Brooks and P.J. Bridges, Superalloys 1988, ed. S. Reichman et al. (Warrendale PA: TMS, 1988), pp. 33–42.

    Google Scholar 

  3. J.F. Radavich, “Long Time Stability of a Wrought Alloy 718 Disk,” Superalloy 718—Metallurgy and Applications, ed. E.A. Loria (Warrendale, PA: TMS, 1989).

    Google Scholar 

  4. G.E. Korth, “Mechanical Properties Test Data of Alloy 718 for Liquid Metal Fast Breeder Reactor Applications,” EG&G Report No. EGG-2229 (Washington, D.C.: DOE, January 1983).

    Google Scholar 

  5. J.F. Radavich and G.E. Korth, “High Temperature Degradation of Alloy 718 after Longtime Exposures,” Superalloys 1992, ed. S.D. Antolovich et al. (Warrendale, PA: TMS, 1992), pp. 497–506.

    Google Scholar 

  6. G.E. Korth and C.L. Trybus, “Tensile Properties and Microstructure of Alloy 718 Thermally Aged to 50,000 h,” Superalloys 718, 625 and Various Derivatives, ed. E.A. Loria (Warrendale, PA: TMS, 1991), pp. 437–446.

    Google Scholar 

  7. C.R. Brinkman, M.K. Booker, and J. L. Ding, “Creep and Creep-Rupture Behavior of Alloy 718,” Superalloys 718, 625 and Various Derivatives, ed. E.A. Loria (Warrendale, PA: TMS, 1991), pp. 519–536.

    Google Scholar 

  8. G.R. Smolik and G.E. Korth, “Reference Heat of Alloy 718 for Department of Energy Programs,” EG&G Report No. TREE-1253 (Washington, D.C.: DOE, April 1978).

    Google Scholar 

  9. J.F. Radavich, “Metallography of a High Strength Modified 718 Alloy—PWA 1472,” Superalloys 718, 625 and Various Derivatives, ed. E.A. Loria (Warrendale, PA: TMS, 1991), pp. 865–877.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Idaho National Engineering and Environmental Laboratory, USA

    Gary E. Korth (principal scientist)

Authors
  1. Gary E. Korth
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

For more information, contact G.E. Korth, Bechtel BWXT Idaho, LLC, Idaho National Engineering and Environmental Laboratory, Idaho Falls, Idaho 83415-2218; (208) 526-0348; fax (208) 526-0690; e-mail gok2@inel.gov.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Korth, G.E. Creep rupture of alloy 718 after thermal aging. JOM 52, 40–42 (2000). https://doi.org/10.1007/s11837-000-0114-0

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11837-000-0114-0

Keywords

Search

Navigation