MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Precipitation of Solid Transmutation Elements in Irradiated Tungsten Alloys
Takashi TannoAkira HasegawaMitsuhiro FujiwaraJian-Chao HeShuhei NogamiManabu SatouToetsu ShishidoKatsunori Abe
Author information
JOURNALS FREE ACCESS

2008 Volume 49 Issue 10 Pages 2259-2264

Details
Abstract

Tungsten-based model alloys were fabricated to simulate compositional changes by neutron irradiation, performed in the JOYO fast test reactor. The irradiation damage range was 0.17–1.54 dpa and irradiation temperatures were 400, 500 and 750°C. After irradiation, microstructural observations and electrical resistivity measurements were carried out. A number of precipitates were observed after 1.54 dpa irradiation. Rhenium and osmium were precipitated by irradiation, which suppressed the formation of dislocation loops and voids. Structures induced by irradiation were not observed so much after 0.17 dpa irradiation. Electrical resistivity measurements showed that the effects of osmium on the electrical resistivity, related to impurity solution content, were larger than that of rhenium. Measurements of electrical resistivity of ternary alloys showed that the precipitation behavior was similar to that in binary alloys.

Information related to the author
© 2008 The Japan Institute of Metals and Materials
Previous article Next article
feedback
Top