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

Title: Radiation-Damage in Molybdenum-Rhenium Alloys for Space Reactor Applications

Abstract

Various Mo-Re alloys are attractive candidates for use as fuel cladding and core structural materials in spacecraft reactor applications. Molybdenum alloys with rhenium contents of 41% to 47.5% (wt%), in particular, have good creep resistance and ductility in both base metal and weldments. However, irradiation-induced changes such as transmutation and radiation-induced segregation could lead to precipitation and, ultimately, radiation-induced embrittlement. The objective of this work is to evaluate the mechanical properties of Mo-41Re and Mo-47.5Re after irradiation at space reactor relevant temperatures. Tensile specimens of Mo-41Re and Mo-47.5Re alloys were irradiated to ~ 0.7 dpa at 1073, 1223, and 1373 K and ~1.4 dpa at 1073 K in the High Flux Isotope Reactor at Oak Ridge National Laboratory. Following irradiation, the specimens were strained to failure at a rate of 1 x 10-3 s-1 in vacuum at the irradiation temperature. In addition, unirradiated specimens and specimens aged for 1100 hours at each irradiation temperature were also tested. Fracture mode of the tensile specimens was determined.

Authors:
 [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Flux Isotope Reactor
Sponsoring Org.:
Work for Others (WFO)
OSTI Identifier:
931931
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Journal Volume: 366; Journal Issue: 3; Conference: TMS 2006 Spring Conference: Space Reactor Fuels and Materials: Refractory Alloy Properties and Welding, San Antonio, TX, USA, 20060313, 20060316
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; ALLOYS; BUILDING MATERIALS; HEAT RESISTING ALLOYS; HFIR REACTOR; IRRADIATION; MECHANICAL PROPERTIES; MOLYBDENUM ALLOYS; NUCLEAR FUELS; RHENIUM ALLOYS; WELDING; NESDPS Office of Nuclear Energy Space and Defense Power Systems

Citation Formats

Busby, Jeremy T, Leonard, Keith J, and Zinkle, Steven J. Radiation-Damage in Molybdenum-Rhenium Alloys for Space Reactor Applications. United States: N. p., 2007. Web. doi:10.1016/j.jnucmat.2007.03.028.
Busby, Jeremy T, Leonard, Keith J, & Zinkle, Steven J. Radiation-Damage in Molybdenum-Rhenium Alloys for Space Reactor Applications. United States. doi:10.1016/j.jnucmat.2007.03.028.
Busby, Jeremy T, Leonard, Keith J, and Zinkle, Steven J. Mon . "Radiation-Damage in Molybdenum-Rhenium Alloys for Space Reactor Applications". United States. doi:10.1016/j.jnucmat.2007.03.028.
@article{osti_931931,
title = {Radiation-Damage in Molybdenum-Rhenium Alloys for Space Reactor Applications},
author = {Busby, Jeremy T and Leonard, Keith J and Zinkle, Steven J},
abstractNote = {Various Mo-Re alloys are attractive candidates for use as fuel cladding and core structural materials in spacecraft reactor applications. Molybdenum alloys with rhenium contents of 41% to 47.5% (wt%), in particular, have good creep resistance and ductility in both base metal and weldments. However, irradiation-induced changes such as transmutation and radiation-induced segregation could lead to precipitation and, ultimately, radiation-induced embrittlement. The objective of this work is to evaluate the mechanical properties of Mo-41Re and Mo-47.5Re after irradiation at space reactor relevant temperatures. Tensile specimens of Mo-41Re and Mo-47.5Re alloys were irradiated to ~ 0.7 dpa at 1073, 1223, and 1373 K and ~1.4 dpa at 1073 K in the High Flux Isotope Reactor at Oak Ridge National Laboratory. Following irradiation, the specimens were strained to failure at a rate of 1 x 10-3 s-1 in vacuum at the irradiation temperature. In addition, unirradiated specimens and specimens aged for 1100 hours at each irradiation temperature were also tested. Fracture mode of the tensile specimens was determined.},
doi = {10.1016/j.jnucmat.2007.03.028},
journal = {},
number = 3,
volume = 366,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

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: