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

Abstract

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.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
OSTI Identifier:
6168915
Report Number(s):
UCRL-96198; CONF-871036-1
ON: DE88000047
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
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
Subject:
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; 700209* - Fusion Power Plant Technology- Component Development & Materials Testing; 360106 - Metals & Alloys- Radiation Effects

Citation Formats

Huang, J S, Guinan, M W, and Hahn, P A. Fusion neutron irradiation of Ni(Si) alloys at high temperature. United States: N. p., 1987. Web.
Huang, J S, Guinan, M W, & Hahn, P A. Fusion neutron irradiation of Ni(Si) alloys at high temperature. United States.
Huang, J S, Guinan, M W, and Hahn, P A. Tue . "Fusion neutron irradiation of Ni(Si) alloys at high temperature". United States. https://www.osti.gov/servlets/purl/6168915.
@article{osti_6168915,
title = {Fusion neutron irradiation of Ni(Si) alloys at high temperature},
author = {Huang, J S and Guinan, M W and Hahn, P A},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6168915}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {9}
}

Conference:
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