Atom probe tomography analysis of high dose MA957 at selected irradiation temperatures

N.A. Bailey; Erich Stergar; M. Toloczko; P. Hosemann

doi:10.1016/j.jnucmat.2015.01.006

Atom probe tomography analysis of high dose MA957 at selected irradiation temperatures

N.A. Bailey, Erich Stergar, M. Toloczko, P. Hosemann

Research output › peer-review

Abstract

The oxide dispersion strengthened alloy MA957, irradiated up to 113 dpa in the Fast Flux Test Facility-Materials Open Test Assembly, was investigated by 3D-atom probe tomography. Oxide particles appear to be stable under irradiation at elevated temperatures. Although, the nominal chemistry of the particles does not change, evidence suggests occurence of ballistic dissolution and reformation processes. At 412 °C and 109 dpa also the chromium rich α' phase appears between oxide particles suggesting radiation induced segregation.

Original language	English
Pages (from-to)	225-234
Journal	Journal of Nuclear Materials
Volume	459
Issue number	04
DOIs	https://doi.org/10.1016/j.jnucmat.2015.01.006
State	Published - Apr 2015

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Cite this

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title = "Atom probe tomography analysis of high dose MA957 at selected irradiation temperatures",

abstract = "The oxide dispersion strengthened alloy MA957, irradiated up to 113 dpa in the Fast Flux Test Facility-Materials Open Test Assembly, was investigated by 3D-atom probe tomography. Oxide particles appear to be stable under irradiation at elevated temperatures. Although, the nominal chemistry of the particles does not change, evidence suggests occurence of ballistic dissolution and reformation processes. At 412 °C and 109 dpa also the chromium rich α' phase appears between oxide particles suggesting radiation induced segregation.",

keywords = "MA957, APT, FFTF-MOTA, FIB, ODS",

author = "N.A. Bailey and Erich Stergar and M. Toloczko and P. Hosemann",

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AU - Stergar, Erich

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AU - Hosemann, P.

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AB - The oxide dispersion strengthened alloy MA957, irradiated up to 113 dpa in the Fast Flux Test Facility-Materials Open Test Assembly, was investigated by 3D-atom probe tomography. Oxide particles appear to be stable under irradiation at elevated temperatures. Although, the nominal chemistry of the particles does not change, evidence suggests occurence of ballistic dissolution and reformation processes. At 412 °C and 109 dpa also the chromium rich α' phase appears between oxide particles suggesting radiation induced segregation.

KW - MA957

KW - APT

KW - FFTF-MOTA

KW - FIB

KW - ODS

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UR - http://knowledgecentre.sckcen.be/so2/bibref/12220

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