NSUF 19-1698: Mechanical property and microstructural characterization of irradiated stainless steel via in situ SEM-EBSD mechanical testing.
Metallic systems exposed to high loads and elevated temperatures are susceptible to creep deformation and creep damage. Although the primary concern in creep is in the high temperature reactors such as UK’s advanced gas cooled and Gen IV reactors, some in-core components of light water reactors also operate in creep regime. The complication of creep in in-reactor components is that while irradiation damage embrittles the materials, potentially recuing their susceptibility to creep, the additional energy put in the system by fast neutrons promotes dislocation climb and thus creep deformation. These effects of these two competing mechanisms makes simulating the deformation and calculating the life of in-core components difficult. In this project we aim to decouple these two phenomena and develop a multi-scale model capable of simulating both so the response of different materials to creep load in the presence of irradiation damage can be estimated.
Additional Info
| Field | Value |
|---|---|
| Abstract | Metallic systems exposed to high loads and elevated temperatures are susceptible to creep deformation and creep damage. Although the primary concern in creep is in the high temperature reactors such as UK’s advanced gas cooled and Gen IV reactors, some in-core components of light water reactors also operate in creep regime. The complication of creep in in-reactor components is that while irradiation damage embrittles the materials, potentially recuing their susceptibility to creep, the additional energy put in the system by fast neutrons promotes dislocation climb and thus creep deformation. These effects of these two competing mechanisms makes simulating the deformation and calculating the life of in-core components difficult. In this project we aim to decouple these two phenomena and develop a multi-scale model capable of simulating both so the response of different materials to creep load in the presence of irradiation damage can be estimated. |
| Award Announced Date | 2019-02-08T00:00:00 |
| Awarded Institution | Center for Advanced Energy Studies |
| Facility | Microscopy and Characterization Suite |
| Facility Tech Lead | Kory Linton, Yaqiao Wu |
| Irradiation Facility | None |
| PI | Mahmoud Mostafavi |
| PI Email | [email protected] |
| Project Type | RTE |
| RTE Number | 1698 |