Fusion neutron irradiation of Ni(Si) alloys at high temperature

Conference · Tue Sep 01 00:00:00 EDT 1987

OSTI ID:6168915

Huang, J S; Guinan, M W; Hahn, P A

Two Ni-4% Si alloys, with different cold work levels, are irradiated with 14 MeV fusion neutrons at 623 K, and their Curie temperatures are monitored during irradiation. The results are compared to those of an identical alloy irradiated by 2 MeV electrons. The results show that increasing dislocation density increases the Curie temperature change rate. At the same damage rate, the Curie temperature change rate for the alloy irradiated by 14 MeV fusion neutrons is only 6 to 7% of that for an identical alloy irradiated by 2 MeV electrons. It is well known that the migration of radiation induced defects contributes to segregation of silicon atoms at sinks in this alloy, causing the Curie temperature changes. The current results imply that the relative free defect production efficiency decreases from one for the electron irradiated sample to 6 to 7% for the fusion neutron irradiated sample. 17 refs., 4 figs., 1 tab.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6168915
• Report Number(s): UCRL-96198; CONF-871036-1; ON: DE88000047
• Resource Relation: Conference: 3. international conference on fusion reactor materials, Karlsruhe, F.R. Germany, 4 Oct 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
36 MATERIALS SCIENCE
NICKEL ALLOYS
IRRADIATION
PHYSICAL RADIATION EFFECTS
THERMONUCLEAR REACTOR MATERIALS
EXPERIMENTAL DATA
MATERIALS TESTING
MEV RANGE 01-10
SILICON
TEMPERATURE MEASUREMENT
ALLOYS
DATA
ELEMENTS
ENERGY RANGE
INFORMATION
MATERIALS
MEV RANGE
NUMERICAL DATA
RADIATION EFFECTS
SEMIMETALS
TESTING
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