Radiation Induced Segregation at Grain Boundaries in Steels: NSUF 2018 Milestone Report

Dalong Zhang, Quinlan B. Smith, Philip Edmondson, Kevin G. Field, Kory Linton

Research output: Book/ReportCommissioned report

Abstract

This document outlines the user supported post-irradiation characterization by Oak Ridge National Laboratory under the Nuclear Scientific User Facility Consolidated Innovative Nuclear Research project, “Correlative Atom Probe and Electron Microscopy Study of Radiation Induced Segregation at Low and High Angle Grain Boundaries in Steels.” Fiscal Year 2018 was the second of a two-year project aimed at using analytical electron microscopy combined with atom probe tomography (APT) to probe the nanometer length scale segregations in austenitic stainless steels after neutron irradiation. Particularly, analytical electron microscopy using the FEI F200X Talos was successfully completed in the first year, and the second year was focused on APT study. Scanning electron microscopy (SEM) coupled with an electron backscatter diffraction (EBSD) detector was performed on selected specimens to locate high and low angle grain boundaries for targeted specimen preparation using focused ion beam (FIB). FIB prepared lift outs were used for APT examination of the grain boundaries using a Cameca Instruments LEAP 4000X HR instrument. This report briefly summarizes the specimen preparation and APT results obtained at the Center for Advanced Energy Studies.
Original languageEnglish
Place of PublicationUnited States
DOIs
StatePublished - 2018

Keywords

  • 36 MATERIALS SCIENCE
  • 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

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