skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fission-fusion correlations for swelling and microstructure in stainless steels: effect of the helium-to-displacement-per-atom ratio

Abstract

The initial irradiated structural materials data base for fusion applications will be developed in fission reactors. Hence, this data may need to be adjusted using physically-based procedures to represent behavior in fusion environments, viz. - fission-fusion correlations. Such correlation should reflect a sound mechanistic understanding, and be verified in facilities which most closely simulate fusion conditions. In this paper we review the effects of only one of a number of potentially significant damage variables, the helium to displacement per atom ratio, on microstructural evolution in austenitic stainless steels. Dual-ion and helium preinjection data are analyzed to provide mechanistic guidance; these results appear to be qualitatively consistent with a more detailed comparison made between fast (EBR-II) and mixed (HFIR) spectrum neutron data for a single heat of 20% cold-worked 316 stainless steel. These two fission environments bound fusion (He/dpa ratios. A model calibrated to the fission reactor data is used to extrapolate to fusion conditions. Both the theory and broad empirical observation suggest that helium to dpa ratios have both a qualitative and quantitative influence on microstructural evolution; and that the very high and low ratios found in HFIR and EBR-II may not result in behavior which brackets intermediate fusion conditions.

Authors:
; ;
Publication Date:
Research Org.:
California Univ., Santa Barbara (USA); Oak Ridge National Lab., TN (USA); Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center
OSTI Identifier:
6807354
Report Number(s):
CONF-810831-98-Draft
ON: DE82020938
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Conference
Resource Relation:
Conference: Fusion reactor materials meeting, Seattle, WA, USA, 9 Aug 1981; Other Information: Portions of document are illegible
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; STAINLESS STEEL-316; MICROSTRUCTURE; PHYSICAL RADIATION EFFECTS; SWELLING; DISPLACEMENT RATES; FISSION; HELIUM; NEUTRON REACTIONS; TEST REACTORS; THERMONUCLEAR REACTOR MATERIALS; ALLOYS; BARYON REACTIONS; CHROMIUM ALLOYS; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; CORROSION RESISTANT ALLOYS; CRYSTAL STRUCTURE; ELEMENTS; FLUIDS; GASES; HADRON REACTIONS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NONMETALS; NUCLEAR REACTIONS; NUCLEON REACTIONS; RADIATION EFFECTS; RARE GASES; REACTORS; RESEARCH AND TEST REACTORS; STAINLESS STEELS; STEELS; 360103* - Metals & Alloys- Mechanical Properties; 700209 - Fusion Power Plant Technology- Component Development & Materials Testing

Citation Formats

Odette, G R, Maziaz, P J, and Spitznagel, J A. Fission-fusion correlations for swelling and microstructure in stainless steels: effect of the helium-to-displacement-per-atom ratio. United States: N. p., 1981. Web.
Odette, G R, Maziaz, P J, & Spitznagel, J A. Fission-fusion correlations for swelling and microstructure in stainless steels: effect of the helium-to-displacement-per-atom ratio. United States.
Odette, G R, Maziaz, P J, and Spitznagel, J A. Thu . "Fission-fusion correlations for swelling and microstructure in stainless steels: effect of the helium-to-displacement-per-atom ratio". United States. https://www.osti.gov/servlets/purl/6807354.
@article{osti_6807354,
title = {Fission-fusion correlations for swelling and microstructure in stainless steels: effect of the helium-to-displacement-per-atom ratio},
author = {Odette, G R and Maziaz, P J and Spitznagel, J A},
abstractNote = {The initial irradiated structural materials data base for fusion applications will be developed in fission reactors. Hence, this data may need to be adjusted using physically-based procedures to represent behavior in fusion environments, viz. - fission-fusion correlations. Such correlation should reflect a sound mechanistic understanding, and be verified in facilities which most closely simulate fusion conditions. In this paper we review the effects of only one of a number of potentially significant damage variables, the helium to displacement per atom ratio, on microstructural evolution in austenitic stainless steels. Dual-ion and helium preinjection data are analyzed to provide mechanistic guidance; these results appear to be qualitatively consistent with a more detailed comparison made between fast (EBR-II) and mixed (HFIR) spectrum neutron data for a single heat of 20% cold-worked 316 stainless steel. These two fission environments bound fusion (He/dpa ratios. A model calibrated to the fission reactor data is used to extrapolate to fusion conditions. Both the theory and broad empirical observation suggest that helium to dpa ratios have both a qualitative and quantitative influence on microstructural evolution; and that the very high and low ratios found in HFIR and EBR-II may not result in behavior which brackets intermediate fusion conditions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: