Influence of aging kinetics on the elevated temperature properties of an advances austenitic steel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aging kinetics of an advanced austenitic steel, modified with stabilizing additions of titanium, niobium, and vanadium have been studied for both the solution annealed and the solution annealed plus cold work conditions, for times up to 3000 hours and temperatures of 600,700,800 and 900°C. Matrix phosphides, coarse MC carbides, leaves and χ phases were observed in the solution annealed condition. The cold worked steel also exhibited a fine distribution of MC carbides, precipitated on dislocations, which persisted for up to 3000 h at 900°C. These stable MC carbides, together with the absence of embrittling intermetallic phases, such as σ phase,provide an explanation for the orders of magnitude improvement in creep rupture properties observed in the cold worked advanced alloy compared with 316 stainless steel, alloy 800H and 17-14 CuMo stainless steel.

Original languageEnglish (US)
Title of host publicationHigh-Temperature Service and Time-Dependent Failure
EditorsR.W. Swindeman, Y. Asada, S.J. Chang, J.A. Todd
PublisherPubl by ASME
Pages95-113
Number of pages19
Volume262
ISBN (Print)0791809897
StatePublished - 1993
EventProceedings of the 1993 Pressure Vessels and Piping Conference - Denver, CO, USA
Duration: Jul 25 1993Jul 29 1993

Other

OtherProceedings of the 1993 Pressure Vessels and Piping Conference
CityDenver, CO, USA
Period7/25/937/29/93

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

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  • Cite this

    Todd Copley, J. (1993). Influence of aging kinetics on the elevated temperature properties of an advances austenitic steel. In R. W. Swindeman, Y. Asada, S. J. Chang, & J. A. Todd (Eds.), High-Temperature Service and Time-Dependent Failure (Vol. 262, pp. 95-113). Publ by ASME.