NSUF 13-425: Microstructure Analysis of HIgh Dose Neutron Irradiated Microstructures
The objective of this project is to characterize the microstructure of alloys irradiated in the BOR-60 reactor to doses of 20 and 40 dpa to compare with ion irradiations designed to emulate the reactor irradiation. This is part of a larger objective of establishing ion irradiation as a major tool for developing radiation-resistant materials for current light water reactors and for advanced reactor concepts. Ion irradiation has the potential for solving the problem of extremely long lead times for reactor irradiations, the high cost of reactor irradiations and the lack of test reactors to conduct irradiations. The overall program has as its goal, an understanding of the evolution of the irradiated microstructure, which can then be used to tailor ion irradiations to achieve optimum emulation of the reactor irradiated microstructure for the specific neutron spectrum. Characterization will focus on the key features of the irradiated microstructure, including dislocation lines and loops, radiation induced segregation at grain boundaries, radiation-induced precipitates or solute clusters and the void size distribution. Methods employed will be TEM/STEM/EFTEM and APT on samples prepared using FIB lift out from 3 mm TEM discs of thickness 250 micrometers. Expected period of performance is from November 2014 to March 2017. If successful, the characterization conducted at ATR-NSUF will be a critical element in helping to establish the conditions under which ion irradiation must be conducted to emulate the microstructure of alloys irradiated in reactor. The impact of this achievement will be to provide a way to assess the radiation tolerance of alloys in time frames and with budgets that are orders of magnitude shorter than for reactor irradiation programs.
Tilleggsinformasjon
| Felt | Verdi |
|---|---|
| Awarded Institution | University of Michigan |
| Embargo End Date | 2026-02-27 |
| Facility Tech Lead | Mukesh Bachhav |
| NSUF Call | FY 2013 RTE Solicitation |
| PI | Gary Was |
| Project Member | Dr. Brian Wirth - University of Tennessee-Knoxville |
| Project Member | Professor Gary Was, Professor - University of Michigan (https://orcid.org/0000-0003-2213-0845) |
| Project Member | Dr. Zhijie Jiao, Research Scientist - University of Michigan (https://orcid.org/0000-0002-3045-7269) |
| Project Member | Professor Emmanuelle Marquis, Professor - University of Michigan (https://orcid.org/0000-0002-6476-2835) |
| Project Member | Prof. Arthur Motta, Professor - Pennsylvania State University (https://orcid.org/0000-0001-5735-1491) |
| Project Member | Professor Djamel Kaoumi, Professor - North Carolina State University (https://orcid.org/0000-0001-7055-0444) |
| Project Type | RTE |
| Publication | An analytical method to extract irradiation hardening from nanoindentation hardness-depth curves Anna Kareer, David Krumwiede, Peter Hosemann, Steve Roberts Journal of Nuclear Materials 498 2018-01-01 https://www.sciencedirect.com/science/article/pii/S0022311517310450?via%3Dihub#ack0010 |
| Publication | Cluster dynamics modeling of Mn-Ni-Si precipitates in ferritic-martensitic steel under irradiation G. Robert Odette Journal of Nuclear Materials 498 2018-01-01 https://www.sciencedirect.com/science/article/pii/S0022311517310176#ack0010 |
| Publication | Characterization of faulted dislocation loops and cavities in ion irradiated alloy 800H Arthur Motta Journal of Nuclear Materials 498 2018-01-01 https://www.sciencedirect.com/science/article/pii/S0022311517308590#ack0010 |
| Publication | Microstructural evolution of the 21Cr32Ni model alloy under irradiation Arthur Motta Journal of Nuclear Materials 510 2018-11-01 https://www.sciencedirect.com/science/article/pii/S0022311518303568?via%3Dihub#ack0010 |
| Publication | Microstructure evolution of T91 irradiated in the BOR60 fast reactor Zhijie Jiao, Stephen Taller, Kevin Field, Gary Was Journal of Nuclear Materials 504 2018-06-01 https://www.sciencedirect.com/science/article/pii/S0022311518301806#ack0010 |
| Publication | High Fidelity Ion Beam Simulation of High Dose Neutron Irradiation Gary Was OSTI.gov, Technical Report None 2018-04-30 https://www.osti.gov/servlets/purl/1437129 |
| Publication | Application of NSUF Capabilities Towards Understanding the Emulation of High Dose Neutron Irradiations with Ion Beams Kevin Field, Stephen Taller, Christopher Ulmer, Zhijie Jiao, Tarik Saleh, Arthur Motta, Gary Was Transactions of the American Nuclear Society 116 2017-06-15 https://www.osti.gov/biblio/23047425 |
| RTE Number | 425 |