Proton irradiation and characterization of additively manufactured 304L stainless steels

B. P. Eftink; J. S. Weaver; J. A. Valdez; V. Livescu; D. Chen; Y. Wang; C. Knapp; N. A. Mara; S. A. Maloy; G. T. Gray

doi:10.1016/j.jnucmat.2020.152007

Proton irradiation and characterization of additively manufactured 304L stainless steels

B. P. Eftink, J. S. Weaver, J. A. Valdez, V. Livescu, D. Chen, Y. Wang, C. Knapp, N. A. Mara, S. A. Maloy, G. T. Gray

Chemical Engineering and Materials Science

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Abstract

Irradiations were performed with 1.5 MeV protons to 0.6 dpa at 40–150 °C on additively manufactured (AM) 304L stainless steel and the changes in microstructure and mechanical behavior after irradiation were compared to wrought 304L stainless steel. All microstructural and hardness results after irradiation suggest the samples evolve toward a similar state, despite significant differences in the unirradiated microstructures and hardness values. A TEM and nanoindentation-based investigation of before and after proton irradiation at 40–150 °C is presented. Results are interpreted in terms of initial dislocation content, dislocation structures, and microstructural and chemical homogeneity.

Original language	English (US)
Article number	152007
Journal	Journal of Nuclear Materials
Volume	531
DOIs	https://doi.org/10.1016/j.jnucmat.2020.152007
State	Published - Apr 1 2020

Bibliographical note

Publisher Copyright:
© 2020

Keywords

Additive manufacturing
Dislocation structures
Irradiated metals
TEM
X-ray diffraction

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title = "Proton irradiation and characterization of additively manufactured 304L stainless steels",

abstract = "Irradiations were performed with 1.5 MeV protons to 0.6 dpa at 40–150 °C on additively manufactured (AM) 304L stainless steel and the changes in microstructure and mechanical behavior after irradiation were compared to wrought 304L stainless steel. All microstructural and hardness results after irradiation suggest the samples evolve toward a similar state, despite significant differences in the unirradiated microstructures and hardness values. A TEM and nanoindentation-based investigation of before and after proton irradiation at 40–150 °C is presented. Results are interpreted in terms of initial dislocation content, dislocation structures, and microstructural and chemical homogeneity.",

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AU - Eftink, B. P.

AU - Weaver, J. S.

AU - Valdez, J. A.

AU - Livescu, V.

AU - Chen, D.

AU - Wang, Y.

AU - Knapp, C.

AU - Mara, N. A.

AU - Maloy, S. A.

AU - Gray, G. T.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Irradiations were performed with 1.5 MeV protons to 0.6 dpa at 40–150 °C on additively manufactured (AM) 304L stainless steel and the changes in microstructure and mechanical behavior after irradiation were compared to wrought 304L stainless steel. All microstructural and hardness results after irradiation suggest the samples evolve toward a similar state, despite significant differences in the unirradiated microstructures and hardness values. A TEM and nanoindentation-based investigation of before and after proton irradiation at 40–150 °C is presented. Results are interpreted in terms of initial dislocation content, dislocation structures, and microstructural and chemical homogeneity.

AB - Irradiations were performed with 1.5 MeV protons to 0.6 dpa at 40–150 °C on additively manufactured (AM) 304L stainless steel and the changes in microstructure and mechanical behavior after irradiation were compared to wrought 304L stainless steel. All microstructural and hardness results after irradiation suggest the samples evolve toward a similar state, despite significant differences in the unirradiated microstructures and hardness values. A TEM and nanoindentation-based investigation of before and after proton irradiation at 40–150 °C is presented. Results are interpreted in terms of initial dislocation content, dislocation structures, and microstructural and chemical homogeneity.

KW - Additive manufacturing

KW - Dislocation structures

KW - Irradiated metals

KW - TEM

KW - X-ray diffraction

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

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Proton irradiation and characterization of additively manufactured 304L stainless steels

Abstract

Bibliographical note

Keywords

UN SDGs

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