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

Abstract

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.

Inventors:
 [1];  [1];  [2];  [2];  [2]
  1. Oak Ridge, TN
  2. Knoxville, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
913431
Patent Number(s):
7258752
Application Number:
10/397,582
Assignee:
UT-Battelle LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Maziasz, Philip J, Swindeman, Robert W, Pint, Bruce A, Santella, Michael L, and More, Karren L. Wrought stainless steel compositions having engineered microstructures for improved heat resistance. United States: N. p., 2007. Web.
Maziasz, Philip J, Swindeman, Robert W, Pint, Bruce A, Santella, Michael L, & More, Karren L. Wrought stainless steel compositions having engineered microstructures for improved heat resistance. United States.
Maziasz, Philip J, Swindeman, Robert W, Pint, Bruce A, Santella, Michael L, and More, Karren L. Tue . "Wrought stainless steel compositions having engineered microstructures for improved heat resistance". United States. https://www.osti.gov/servlets/purl/913431.
@article{osti_913431,
title = {Wrought stainless steel compositions having engineered microstructures for improved heat resistance},
author = {Maziasz, Philip J and Swindeman, Robert W and Pint, Bruce A and Santella, Michael L and More, Karren L},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {8}
}

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Works referenced in this record:

Selecting and Developing Advanced Alloys for Creep-Resistance for Microturbine Recuperator Applications
conference, July 2014

  • 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

Materials Selection for High Temperature (750°–1000°C) Metallic Recuperators for Improved Efficiency Microturbines
conference, July 2014

  • 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