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Title: Wrought stainless steel compositions having engineered microstructures for improved heat resistance

Patent ·
OSTI ID:913431
 [1];  [1];  [2];  [2];  [2]
  1. Oak Ridge, TN
  2. Knoxville, TN
+ Show Author Affiliations

A wrought stainless steel alloy composition includes 12% to 25% Cr, 8% to 25% Ni, 0.05% to 1% Nb, 0.05% to 10% Mn, 0.02% to 0.15% C, 0.02% to 0.5% N, with the balance iron, the composition having the capability of developing an engineered microstructure at a temperature above 550.degree. C. The engineered microstructure includes an austenite matrix having therein a dispersion of intragranular NbC precipitates in a concentration in the range of 10.sup.10 to 10.sup.17 precipitates per cm.sup.3.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle LLC (Oak Ridge, TN)
Patent Number(s):
7,258,752
Application Number:
10/397,582
OSTI ID:
913431
Country of Publication:
United States
Language:
English

References (4)

Structure and Properties of a 19Cr-25Ni-Mo-Ti Steel
  • Andersson, T.; Törnblom, H.; Samuelsson, A.
  • MiCon 78: Optimization of Processing, Properties, and Service Performance Through Microstructural Control https://doi.org/10.1520/STP36881S
book January 1979
Selecting and Developing Advanced Alloys for Creep-Resistance for Microturbine Recuperator Applications
  • Maziasz, Philip J.; Swindeman, Robert W.
  • ASME Turbo Expo 2001: Power for Land, Sea, and Air, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery https://doi.org/10.1115/2001-GT-0541
conference July 2014
Developing an austenitic stainless steel for improved performance in advanced fossil power facilities journal July 1989
Materials Selection for High Temperature (750°–1000°C) Metallic Recuperators for Improved Efficiency Microturbines
  • Pint, Bruce A.; Swindeman, Robert W.; More, Karren L.
  • ASME Turbo Expo 2001: Power for Land, Sea, and Air, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery https://doi.org/10.1115/2001-GT-0445
conference July 2014

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36 MATERIALS SCIENCE