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Title: High Temperature and Pressure Steam-H2 Interaction with Candidate Advanced LWR Fuel Claddings

Abstract

This report summarizes the work completed to evaluate cladding materials that could serve as improvements to Zircaloy in terms of accident tolerance. This testing involved oxidation resistance to steam or H{sub 2}-50% steam environments at 800-1350 C at 1-20 bar for short times. A selection of conventional alloys, SiC-based ceramics and model alloys were used to explore a wide range of materials options and provide guidance for future materials development work. Typically, the SiC-based ceramic materials, alumina-forming alloys and Fe-Cr alloys with {ge}25% Cr showed the best potential for oxidation resistance at {ge}1200 C. At 1350 C, FeCrAl alloys and SiC remained oxidation resistant in steam. Conventional austenitic steels do not have sufficient oxidation resistance with only {approx}18Cr-10Ni. Higher alloyed type 310 stainless steel is protective but Ni is not a desirable alloy addition for this application and high Cr contents raise concern about {alpha}{prime} formation. Higher pressures (up to 20.7 bar) and H{sub 2} additions appeared to have a limited effect on the oxidation behavior of the most oxidation resistant alloys but higher pressures accelerated the maximum metal loss for less oxidation resistant steels and less metal loss was observed in a H{sub 2}-50%H{sub 2}O environment at 10.3 bar.more » As some of the results regarding low-alloyed FeCrAl and Fe-Cr alloys were unexpected, further work is needed to fundamentally understand the minimum Cr and Al alloy contents needed for protective behavior in these environments in order to assist in alloy selection and guide alloy development.« less

Authors:
 [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1050376
Report Number(s):
ORNL/TM-2012/254
AF5810000; NEAF278; TRN: US201218%%995
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ACCIDENTS; ALLOYS; AUSTENITIC STEELS; CERAMICS; OXIDATION; STAINLESS STEELS; STEAM; STEELS; TESTING; TOLERANCE; ZIRCALOY; LOCA; SiC; FeCrAl; Stainless Steel; Steam; Oxidation

Citation Formats

Pint, Bruce A. High Temperature and Pressure Steam-H2 Interaction with Candidate Advanced LWR Fuel Claddings. United States: N. p., 2012. Web. doi:10.2172/1050376.
Pint, Bruce A. High Temperature and Pressure Steam-H2 Interaction with Candidate Advanced LWR Fuel Claddings. United States. https://doi.org/10.2172/1050376
Pint, Bruce A. 2012. "High Temperature and Pressure Steam-H2 Interaction with Candidate Advanced LWR Fuel Claddings". United States. https://doi.org/10.2172/1050376. https://www.osti.gov/servlets/purl/1050376.
@article{osti_1050376,
title = {High Temperature and Pressure Steam-H2 Interaction with Candidate Advanced LWR Fuel Claddings},
author = {Pint, Bruce A},
abstractNote = {This report summarizes the work completed to evaluate cladding materials that could serve as improvements to Zircaloy in terms of accident tolerance. This testing involved oxidation resistance to steam or H{sub 2}-50% steam environments at 800-1350 C at 1-20 bar for short times. A selection of conventional alloys, SiC-based ceramics and model alloys were used to explore a wide range of materials options and provide guidance for future materials development work. Typically, the SiC-based ceramic materials, alumina-forming alloys and Fe-Cr alloys with {ge}25% Cr showed the best potential for oxidation resistance at {ge}1200 C. At 1350 C, FeCrAl alloys and SiC remained oxidation resistant in steam. Conventional austenitic steels do not have sufficient oxidation resistance with only {approx}18Cr-10Ni. Higher alloyed type 310 stainless steel is protective but Ni is not a desirable alloy addition for this application and high Cr contents raise concern about {alpha}{prime} formation. Higher pressures (up to 20.7 bar) and H{sub 2} additions appeared to have a limited effect on the oxidation behavior of the most oxidation resistant alloys but higher pressures accelerated the maximum metal loss for less oxidation resistant steels and less metal loss was observed in a H{sub 2}-50%H{sub 2}O environment at 10.3 bar. As some of the results regarding low-alloyed FeCrAl and Fe-Cr alloys were unexpected, further work is needed to fundamentally understand the minimum Cr and Al alloy contents needed for protective behavior in these environments in order to assist in alloy selection and guide alloy development.},
doi = {10.2172/1050376},
url = {https://www.osti.gov/biblio/1050376}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 01 00:00:00 EDT 2012},
month = {Wed Aug 01 00:00:00 EDT 2012}
}