Proton irradiation and characterization of additively manufactured 304L stainless steels

JOURNAL OF NUCLEAR MATERIALS

卷:531

Article

Eftink, B. P.¹  Weaver, J. S.^2,3  Valdez, J. A.¹  Livescu, V¹  Chen, D.^1,4  Wang, Y.¹  Knapp, C.⁵  Mara, N. A.^2,6  Maloy, S. A.¹  Gray, G. T., III¹ 

[1] Los Alamos Natl Lab, MST Mat Irradiat & Dynam Extremes 8, POB 1663, Los Alamos, NM 87545 USA

[2] Ctr Integrated Nanotechnol, Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA

[3] NIST, Engn Lab, 100 Bur Dr, Gaithersburg, MD 20899 USA

[4] Univ Houston, Dept Phys, 3507 Cullen Blvd, Houston, TX 77204 USA

[5] Los Alamos Natl Lab, Sigma Div, POB 1663, Los Alamos, NM 87545 USA

[6] Univ Minnesota Twin Cities, Chem Engn & Mat Sci, 421 Washington Ave SE, Minneapolis, MN 55455 USA

关键词: Additive manufacturing;    Dislocation structures;    Irradiated metals;    TEM;    X-ray diffraction;   

DOI  :  10.1016/j.jnucmat.2020.152007

来源: Elsevier

【 摘 要 】

Irradiations were performed with 1.5 MeV protons to 0.6 dpa at 40-150 degrees 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 degrees C is presented. Results are interpreted in terms of initial dislocation content, dislocation structures, and microstructural and chemical homogeneity. Published by Elsevier B.V.

【 授权许可】

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