Hardness of 12Cr 8Mo ferritic steels irradiated by Ni ions

12Cr Mo and 12Cr 8Mo 0.1Y 2O 3 ferritic steels were irradiated with 4-MeV Ni + ions up to 300 dpa at 525°C. Microstructural evolution was examined by transmission electron microscopy (TEM) and mechanical properties were evaluated with a depth-sensing ultra-low load indentation hardness tester at roo...

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Veröffentlicht in:	Journal of nuclear materials 1995, Vol.225 (1-3), p.187-191
Hauptverfasser:	Ohta, J., Ohmura, T., Kako, K., Tokiwai, M., Suzuki, T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Cross-disciplinary physics: materials science rheology Deformation, plasticity, and creep Exact sciences and technology Materials science Metals. Metallurgy Physics Treatment of materials and its effects on microstructure and properties
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Beschreibung
Zusammenfassung:	12Cr Mo and 12Cr 8Mo 0.1Y 2O 3 ferritic steels were irradiated with 4-MeV Ni + ions up to 300 dpa at 525°C. Microstructural evolution was examined by transmission electron microscopy (TEM) and mechanical properties were evaluated with a depth-sensing ultra-low load indentation hardness tester at room temperature with a maximum load of 1 gf. Effects of aging at 650°C for 115 h and heat treatment at 525°C for 50 h were also investigated. TEM observations reveal that these steels exhibit no void swelling in the present irradiation condition. Aging and heat treatment induces precipitation of Laves phase and ion-irradiation enhances precipitation. The induction and enhancement of precipitation strengthened the specimens.
ISSN:	0022-3115 1873-4820
DOI:	10.1016/0022-3115(95)00016-X