The effect of prior cold-work on the deformation behaviour of neutron irradiated AISI 304 austenitic stainless steel

Wade Karlsen (Corresponding Author), S. Van Dyck

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

Cold-work is intentionally employed to increase the yield strength of austenitic stainless steels and also occurs during fabrication processes, but it has also been associated with greater incidence of stress corrosion cracking. This study examined the effect of up to 3.85 dpa neutron irradiation on the deformation behaviour and microstructures of 30% cold-worked AISI 304 material tensile tested at 300 °C. While the deformation behaviour of 0.07 dpa material was similar to non-irradiated material tested at the same temperature, its stress–strain curve was shifted upwards by about 200 MPa. Materials irradiated to over 2 dpa hardened some 400–500 MPa, but showed limited strain hardening capacity, exhibiting precipitous softening with further straining beyond the yield point. The observed behaviour is most likely a consequence of planar deformation products serving as strengtheners to the unirradiated bulk on the one hand, while promoting strain localization on the other, behaviour exacerbated by the subsequent neutron irradiation.
Original languageEnglish
Pages (from-to)127-137
Number of pages11
JournalJournal of Nuclear Materials
Volume406
Issue number1
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Fingerprint

austenitic stainless steels
Austenitic stainless steel
Neutrons
neutrons
Neutron irradiation
neutron irradiation
stress corrosion cracking
strain hardening
yield point
yield strength
Stress corrosion cracking
Strain hardening
softening
Yield stress
incidence
Fabrication
microstructure
Microstructure
fabrication
curves

Cite this

@article{c4388bfc6be84ec3a4aa20f954d33278,
title = "The effect of prior cold-work on the deformation behaviour of neutron irradiated AISI 304 austenitic stainless steel",
abstract = "Cold-work is intentionally employed to increase the yield strength of austenitic stainless steels and also occurs during fabrication processes, but it has also been associated with greater incidence of stress corrosion cracking. This study examined the effect of up to 3.85 dpa neutron irradiation on the deformation behaviour and microstructures of 30{\%} cold-worked AISI 304 material tensile tested at 300 °C. While the deformation behaviour of 0.07 dpa material was similar to non-irradiated material tested at the same temperature, its stress–strain curve was shifted upwards by about 200 MPa. Materials irradiated to over 2 dpa hardened some 400–500 MPa, but showed limited strain hardening capacity, exhibiting precipitous softening with further straining beyond the yield point. The observed behaviour is most likely a consequence of planar deformation products serving as strengtheners to the unirradiated bulk on the one hand, while promoting strain localization on the other, behaviour exacerbated by the subsequent neutron irradiation.",
author = "Wade Karlsen and {Van Dyck}, S.",
year = "2010",
doi = "10.1016/j.jnucmat.2010.01.028",
language = "English",
volume = "406",
pages = "127--137",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "1",

}

The effect of prior cold-work on the deformation behaviour of neutron irradiated AISI 304 austenitic stainless steel. / Karlsen, Wade (Corresponding Author); Van Dyck, S.

In: Journal of Nuclear Materials, Vol. 406, No. 1, 2010, p. 127-137.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The effect of prior cold-work on the deformation behaviour of neutron irradiated AISI 304 austenitic stainless steel

AU - Karlsen, Wade

AU - Van Dyck, S.

PY - 2010

Y1 - 2010

N2 - Cold-work is intentionally employed to increase the yield strength of austenitic stainless steels and also occurs during fabrication processes, but it has also been associated with greater incidence of stress corrosion cracking. This study examined the effect of up to 3.85 dpa neutron irradiation on the deformation behaviour and microstructures of 30% cold-worked AISI 304 material tensile tested at 300 °C. While the deformation behaviour of 0.07 dpa material was similar to non-irradiated material tested at the same temperature, its stress–strain curve was shifted upwards by about 200 MPa. Materials irradiated to over 2 dpa hardened some 400–500 MPa, but showed limited strain hardening capacity, exhibiting precipitous softening with further straining beyond the yield point. The observed behaviour is most likely a consequence of planar deformation products serving as strengtheners to the unirradiated bulk on the one hand, while promoting strain localization on the other, behaviour exacerbated by the subsequent neutron irradiation.

AB - Cold-work is intentionally employed to increase the yield strength of austenitic stainless steels and also occurs during fabrication processes, but it has also been associated with greater incidence of stress corrosion cracking. This study examined the effect of up to 3.85 dpa neutron irradiation on the deformation behaviour and microstructures of 30% cold-worked AISI 304 material tensile tested at 300 °C. While the deformation behaviour of 0.07 dpa material was similar to non-irradiated material tested at the same temperature, its stress–strain curve was shifted upwards by about 200 MPa. Materials irradiated to over 2 dpa hardened some 400–500 MPa, but showed limited strain hardening capacity, exhibiting precipitous softening with further straining beyond the yield point. The observed behaviour is most likely a consequence of planar deformation products serving as strengtheners to the unirradiated bulk on the one hand, while promoting strain localization on the other, behaviour exacerbated by the subsequent neutron irradiation.

U2 - 10.1016/j.jnucmat.2010.01.028

DO - 10.1016/j.jnucmat.2010.01.028

M3 - Article

VL - 406

SP - 127

EP - 137

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 1

ER -