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Characterization of Irradiation Effects in Fe-based Alloys for Fusion and Fission Reactors


EMSL Project ID
48665

Abstract

Ferritic/martensitic steels, particularly those modified to include nanoscale oxide dispersions, show great promise for use in structural applications in fusion reactors. Generation of He through transmutation-induced reactions, coupled with displacement damage, lead to significant decreases in the ductile-to-brittle transition temperature and an overall increase in strength and loss of ductility for both ferritic steels. This proposal is aimed at investigating the effects of neutron irradiation, and in some case, ion implantation that is used as a surrogate for neutron irradiation, on the microstructure of various metal alloys that are candidates for future generations of light water and fusion reactors.
The proposal requests the use of the Quanta 3D FIB-SEM to prepare TEM samples from irradiated TEM discs to characterize the dislocation defects, radiation-induced phase changes, and helium distribution.

Project Details

Start Date
2014-10-27
End Date
2015-09-30
Status
Closed

Team

Principal Investigator

Danny Edwards
Institution
Pacific Northwest National Laboratory

Team Members

Jing Wang
Institution
Pacific Northwest National Laboratory

Hee Joon Jung
Institution
Northwestern University

Alan Schemer-Kohrn
Institution
Pacific Northwest National Laboratory