Radiation-induced precipitation with concurrent bubbles formation in an austenitic stainless steel (AISI-348)

Matheus A. Tunes, Cláudio G. Schön, Graeme Greaves

Research output: Contribution to journalArticle

Abstract

Radiation-induced precipitation has been examined in an Nb-stabilised austenitic stainless steel (AISI-348) during heavy ion irradiation in situ within a transmission electron microscope (TEM) at 1073 K. Selected-area electron diffraction (SAED), bright- and dark-field TEM were used to investigate the nature of the precipitates within the austenite phase (γ-Fe). The crystal structure of the precipitates was investigated using TEM and matched with reference data for the Cr23C6 phase. The results herein reported indicate that the concurrent formation of inert gas bubbles may accelerate clustering and precipitation kinetics in the austenite phase during irradiation.
LanguageEnglish
Article number100408
Number of pages5
JournalMaterialia
Volume7
Early online date17 Jul 2019
DOIs
Publication statusPublished - Sep 2019

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Bubble formation
Austenitic stainless steel
Electron microscopes
Radiation
Austenite
Precipitates
Noble Gases
Heavy Ions
Ion bombardment
Inert gases
Heavy ions
Electron diffraction
Crystal structure
Irradiation
Kinetics

Cite this

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title = "Radiation-induced precipitation with concurrent bubbles formation in an austenitic stainless steel (AISI-348)",
abstract = "Radiation-induced precipitation has been examined in an Nb-stabilised austenitic stainless steel (AISI-348) during heavy ion irradiation in situ within a transmission electron microscope (TEM) at 1073 K. Selected-area electron diffraction (SAED), bright- and dark-field TEM were used to investigate the nature of the precipitates within the austenite phase (γ-Fe). The crystal structure of the precipitates was investigated using TEM and matched with reference data for the Cr23C6 phase. The results herein reported indicate that the concurrent formation of inert gas bubbles may accelerate clustering and precipitation kinetics in the austenite phase during irradiation.",
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Radiation-induced precipitation with concurrent bubbles formation in an austenitic stainless steel (AISI-348). / Tunes, Matheus A.; Schön, Cláudio G.; Greaves, Graeme.

In: Materialia, Vol. 7, 100408, 09.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Radiation-induced precipitation with concurrent bubbles formation in an austenitic stainless steel (AISI-348)

AU - Tunes, Matheus A.

AU - Schön, Cláudio G.

AU - Greaves, Graeme

PY - 2019/9

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AB - Radiation-induced precipitation has been examined in an Nb-stabilised austenitic stainless steel (AISI-348) during heavy ion irradiation in situ within a transmission electron microscope (TEM) at 1073 K. Selected-area electron diffraction (SAED), bright- and dark-field TEM were used to investigate the nature of the precipitates within the austenite phase (γ-Fe). The crystal structure of the precipitates was investigated using TEM and matched with reference data for the Cr23C6 phase. The results herein reported indicate that the concurrent formation of inert gas bubbles may accelerate clustering and precipitation kinetics in the austenite phase during irradiation.

KW - AISI-348

KW - Austenitic stainless steels

KW - Heavy ion irradiation

KW - Inert gas bubbles

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