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ASTM Selected Technical Papers
Effects of Radiation on Materials: 17th International Symposium
By
DS Gelles
DS Gelles
1
Battelle Pacific Northwest National Laboratory
?
Richland, WA Symposium Chairman and Editor
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RK Nanstad
RK Nanstad
2
Oak Ridge National Laboratory
?
Oak Ridge, TN Symposium Cochairman and Editor
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AS Kumar
AS Kumar
editor
3
University of Missouri-Rolla
?
Rolla, MO Symposium Cochairman and Editor
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EA Little
EA Little
editor
4Dept. of Materials Engineering
University College
,
Swansea,
UK
Symposium Cochairman and Editor
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ISBN-10:
0-8031-2016-8
ISBN:
978-0-8031-2016-7
No. of Pages:
1183
Publisher:
ASTM International
Publication date:
1996

An austenitic stainless steel, 316F, irradiated in the High Flux Isotope Reactor to doses of about 8 to 33 dpa at 400° and 500°C was investigated. Electron beam (EB) welding and metal inert gas (MIG) welding techniques were used to make weldment specimens. Weldment specimens were made from their weld metal or weld joint (including heat affected zone) regions of the weldments. Base metal was also studied for comparison. Microstructures of these specimens were observed by TEM.

Tensile tests were carried out at the nominal irradiation temperature in vacuum. Solution annealed 316F showed the large irradiation hardening at 400°C, while the change in yield stress observed at 500°C was not so large. Weldments specimens had the same temperature and dose dependence as the base metal. The differences between EB and MIG after irradiation were small, compared to the differences before irradiation, except for the slight less ductility of MIG weldments. The defect microstructures of weldments were the same as base metal.

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