Published February 2021 | Version v1
Journal article Metadata-only

"Effect of proton irradiation on δ-ferrite in the thermally aged austenitic stainless steel weld: Precipitation of G-phase and additional hardening"

Creators

  • 1. Dept. of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 34141, Daejeon, Rep. of (Korea, Republic of)
  • 2. Central Research Institute, Korea Hydro & Nuclear Power Co., LTD, 34101, Daejeon, Rep. of (Korea, Republic of)

Description

An austenitic stainless steel weld was thermally aged at 400 °C for 20,000 h, and subsequently proton irradiated up to 10 displacement per atom (dpa) at 360 °C. After thermal ageing, only spinodal decomposition was observed without G-phase precipitates in δ-ferrite. However, ~ 1023 m−3 of fine (~ 3 nm in diameter) G-phase precipitates were observed after proton irradiation. Also, wavelength of spinodal decomposition was increased with proton irradiation. The additional hardening in δ-ferrite after proton irradiation was attributed to enhanced spinodal decomposition and G-phase precipitation. After irradiation, the contribution to addition hardening was greater for G-phase than enhanced spinodal decomposition.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jnucmat.2020.152656

Additional details

Identifiers

DOI
10.1016/j.jnucmat.2020.152656;
PII
S0022311520312642;

Publishing Information

Journal Title
Journal of Nuclear Materials
Journal Volume
544
Journal Page Range
vp.
ISSN
0022-3115
CODEN
JNUMAM

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54019980
Subject category
S36: MATERIALS SCIENCE; S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
AGING; ATOMIC DISPLACEMENTS; AUSTENITIC STEELS; DECOMPOSITION; FERRITE; FERRITES; HARDENING; IRRADIATION; PRECIPITATION; PROTONS; WAVELENGTHS; WELDED JOINTS
Descriptors DEC
ALLOYS; BARYONS; CARBON ADDITIONS; CHEMICAL REACTIONS; ELEMENTARY PARTICLES; FERMIONS; FERRIMAGNETIC MATERIALS; HADRONS; IRON ALLOYS; IRON BASE ALLOYS; IRON COMPOUNDS; JOINTS; MAGNETIC MATERIALS; MATERIALS; NUCLEONS; OXYGEN COMPOUNDS; PHYSICAL RADIATION EFFECTS; RADIATION EFFECTS; SEPARATION PROCESSES; STEELS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2020 Elsevier B.V. All rights reserved.