Ion-irradiation-induced hardening in Inconel 718
Inconel 718 is a material under consideration for areas in the target region of the spallation neutron source (SNS), now under construction at Oak Ridge National Laboratory (ORNL) in the US. In these positions, displacement damage from protons and neutrons will affect the mechanical properties. In a...
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| Veröffentlicht in: | Journal of Nuclear Materials 2001-07, Vol.296 (1), p.203-209 |
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| container_title | Journal of Nuclear Materials |
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| creator | Hunn, J.D Lee, E.H Byun, T.S Mansur, L.K |
| description | Inconel 718 is a material under consideration for areas in the target region of the spallation neutron source (SNS), now under construction at Oak Ridge National Laboratory (ORNL) in the US. In these positions, displacement damage from protons and neutrons will affect the mechanical properties. In addition, significant amounts of helium and hydrogen will build up in the material due to transmutation reactions. Nanoindentation measurements of solution-annealed (SA) Inconel 718 specimens, implanted with Fe-, He-, and H-ions to simulate SNS target radiation conditions, have shown that hardening occurs due to ion-induced displacement damage as well as due to the build-up of helium bubbles in the irradiated layer. Precipitation-hardened (PH) Inconel 718 also exhibited hardening by helium build-up but showed softening as a function of displacement damage due to dissolution of the γ
′ and γ″ precipitates. |
| doi_str_mv | 10.1016/S0022-3115(01)00519-0 |
| format | Article |
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| subjects | Applications Applied sciences Engineering techniques in metallurgy. Applications. Other aspects Exact sciences and technology Metals. Metallurgy Others applications |
| title | Ion-irradiation-induced hardening in Inconel 718 |
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