A study of the precipitation of copper particles in a ferrite matrix |
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| Affiliation: | 1. College of Mechanical Engineering, University of Campinas – FEM - Unicamp, Campinas, SP 13083-860, Brazil;2. UNIDEMI, Department of Mechanical and Industrial Engineering, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal;3. Welding Engineering, Department of Materials Science and Engineering, The Ohio State University, 1248 Arthur E. Adams Drive, Columbus, OH 43221, USA;4. The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, 37831, USA;5. Mechanical Engineering Department, EIA University, Envigado, Colombia;6. Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996-2210, USA;7. Manufacturing Demonstration Facility, Oak Ridge National Laboratory, Knoxville, TN, USA;1. Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;3. Heavy Steel Plate Institute, R & D Center, Baoshan Iron & Steel Co., Ltd., 889 Fujin Road, Baoshan District, Shanghai 201900, PR China;4. Key Laboratory for Microstructures, Shanghai University, Shanghai 200444, PR China;5. Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China;1. Materalia Research Group, Physical Metallurgy Department, Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain;2. Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Bautzner Landstraße 400, 01328 Dresden, Germany |
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| Abstract: | The influence of small amounts of Cu on the neutron irradiation induced embrittlement of reactor pressure vessel steels is of considerable practical importance. Previous work has shown that the embrittlement is associated with the formation of copper rich precipitates but uncertainties remain regarding their composition and form.The present paper reports preliminary results from a study of such precipitates in solution treated and aged Fe-Cu alloys with additions of Ni and P, using a combination of atom probe analysis in a Field Ion Microscope (FIM) and Small Angle Neutron Scattering (SANS). |
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