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Title: Process for making a martensitic steel alloy fuel cladding product

Abstract

This is a very narrowly defined martensitic steel alloy fuel cladding material for liquid metal cooled reactors, and a process for making such a martensitic steel alloy material. The alloy contains about 10.6 wt. % chromium, about 1.5 wt. % molybdenum, about 0.85 wt. % manganese, about 0.2 wt. % niobium, about 0.37 wt. % silicon, about 0.2 wt. % carbon, about 0.2 wt. % vanadium, 0.05 maximum wt. % nickel, about 0.015 wt. % nitrogen, about 0.015 wt. % sulfur, about 0.05 wt. % copper, about 0.007 wt. % boron, about 0.007 wt. % phosphorous, and with the remainder being essentially iron. The process utilizes preparing such an alloy and homogenizing said alloy at about 1000.degree. C. for 16 hours; annealing said homogenized alloy at 1150.degree. C. for 15 minutes; and tempering said annealed alloy at 700.degree. C. for 2 hours. The material exhibits good high temperature strength (especially long stress rupture life) at elevated temperature (500.degree.-760.degree. C.).

Inventors:
 [1];  [1];  [2];  [3]
  1. Kennewick, WA
  2. Richland, WA
  3. West Richland, WA
Publication Date:
Research Org.:
WESTINGHOUSE HANFORD CO
OSTI Identifier:
867390
Patent Number(s):
US 4927468
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC06-76FF02170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; martensitic; steel; alloy; fuel; cladding; product; narrowly; defined; material; liquid; metal; cooled; reactors; contains; 10; wt; chromium; molybdenum; 85; manganese; niobium; 37; silicon; carbon; vanadium; 05; maximum; nickel; 015; nitrogen; sulfur; copper; 007; boron; phosphorous; remainder; essentially; iron; utilizes; preparing; homogenizing; 1000; degree; 16; hours; annealing; homogenized; 1150; 15; minutes; tempering; annealed; 700; exhibits; temperature; strength; especially; stress; rupture; life; elevated; 500; -760; steel alloy; fuel cladding; temperature strength; process utilizes; liquid metal; elevated temperature; metal cooled; alloy material; cladding material; stress rupture; essentially iron; alloy contains; martensitic steel; narrowly defined; material exhibits; alloy fuel; cooled reactors; cooled reactor; /148/976/

Citation Formats

Johnson, Gerald D, Lobsinger, Ralph J, Hamilton, Margaret L, and Gelles, David S. Process for making a martensitic steel alloy fuel cladding product. United States: N. p., 1990. Web.
Johnson, Gerald D, Lobsinger, Ralph J, Hamilton, Margaret L, & Gelles, David S. Process for making a martensitic steel alloy fuel cladding product. United States.
Johnson, Gerald D, Lobsinger, Ralph J, Hamilton, Margaret L, and Gelles, David S. Mon . "Process for making a martensitic steel alloy fuel cladding product". United States. https://www.osti.gov/servlets/purl/867390.
@article{osti_867390,
title = {Process for making a martensitic steel alloy fuel cladding product},
author = {Johnson, Gerald D and Lobsinger, Ralph J and Hamilton, Margaret L and Gelles, David S},
abstractNote = {This is a very narrowly defined martensitic steel alloy fuel cladding material for liquid metal cooled reactors, and a process for making such a martensitic steel alloy material. The alloy contains about 10.6 wt. % chromium, about 1.5 wt. % molybdenum, about 0.85 wt. % manganese, about 0.2 wt. % niobium, about 0.37 wt. % silicon, about 0.2 wt. % carbon, about 0.2 wt. % vanadium, 0.05 maximum wt. % nickel, about 0.015 wt. % nitrogen, about 0.015 wt. % sulfur, about 0.05 wt. % copper, about 0.007 wt. % boron, about 0.007 wt. % phosphorous, and with the remainder being essentially iron. The process utilizes preparing such an alloy and homogenizing said alloy at about 1000.degree. C. for 16 hours; annealing said homogenized alloy at 1150.degree. C. for 15 minutes; and tempering said annealed alloy at 700.degree. C. for 2 hours. The material exhibits good high temperature strength (especially long stress rupture life) at elevated temperature (500.degree.-760.degree. C.).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent:

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