SYMPOSIA PAPER Published: 01 January 1996
STP16519S

Irradiation Behavior of Weldments of Austenitic Stainless Steel Made by Various Welding Techniques

Source

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.

Author Information

Shiba, K
Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, Japan
Sawai, T
Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, Japan
Jitsukawa, S
Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, Japan
Hishinuma, A
Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, Japan
Pawel, JE
Oak Ridge National Laboratory, Oak Ridge, TN, USA
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Details
Developed by Committee: E10
Pages: 971–979
DOI: 10.1520/STP16519S
ISBN-EB: 978-0-8031-5328-8
ISBN-13: 978-0-8031-2016-7