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Titolo:
Influence of mercury environment on the fatigue behavior of spallation neutron source (SNS) target container materials
Autore:
Tian, H; Liaw, PK; Wang, H; Fielden, D; Strizak, JP; Mansur, LK; DiStefano, JR;
Indirizzi:
Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA Univ Tennessee Knoxville TN USA 37996 Sci & Engn, Knoxville, TN 37996 USA Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA Oak Ridge Natl Lab Oak Ridge TN USA 37831 tl Lab, Oak Ridge, TN 37831 USA
Titolo Testata:
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
fascicolo: 1-2, volume: 314, anno: 2001,
pagine: 140 - 149
SICI:
0921-5093(20010915)314:1-2<140:IOMEOT>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRACK-GROWTH-BEHAVIOR; STAINLESS-STEELS; HYDROGEN; EMBRITTLEMENT;
Keywords:
spallation neutron source; mercury environment; fatigue behavior;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Tian, H Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA Univ Tennessee Knoxville TN USA 37996 gn, Knoxville, TN 37996 USA
Citazione:
H. Tian et al., "Influence of mercury environment on the fatigue behavior of spallation neutron source (SNS) target container materials", MAT SCI E A, 314(1-2), 2001, pp. 140-149

Abstract

The high-cycle fatigue behavior of 316 LN stainless steel (SS), the prime candidate target-container material for the spallation neutron source (SNS), was investigated in air and mercury at frequencies from 10 to 700 Hz witha R ratio of 0.1. A decrease in the fatigue life of 316 LN SS in air was observed with increasing frequency. However, little influence of frequency on fatigue life was found in mercury. An increase in the specimen temperature at 700 Hz seems to be the main factor that contributed to the decrease ofthe fatigue life in air, relative to that at 10 Hz. However, because of the cooling effect of mercury, only a small temperature increase was found at700 Hz. and, therefore, there was little frequency influence in mercury. At 10 Hz, a shorter fatigue life of 316 LN SS was measured in mercury than in air at stresses greater than yield strength, which may have resulted fromliquid metal embrittlement (LME). At lower stresses. no difference in fatigue lives between mercury and air was detected at 10 Hz. At 700 Hz, the fatigue life in mercury was longer than in air. The fatigue endurance limit measured at both frequencies in mercury and in air was approx. 350 MPa. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 04/07/20 alle ore 15:07:45