NSUF 18-1558: In-situ investigation of the Threshold Incubation Dose for the formation of c-component loops in additively manufactured and powder metallurgy rolled Ti-6Al-4V
In-situ TEM irradiation offers the unique capability to investigate the evolution of the irradiation damage through continual imaging and observation. It allows for quantitative and qualitative microstructural studies. Using IVEM-Tandem Facility at Argonne National Laboratory with its in-situ TEM irradiation capability could improve our understanding of the influence of the microstructure and the thermos-mechanical processing on the irradiation damage in Ti-6Al-4V. We are proposing to irradiate 4 TEM samples with 1 MeV Kr ions at 25 °C and 350°C. The Ti-6Al-4V samples are processed through two different thermomechanical processes: powder metallurgy (PM) rolled and additive manufacturing (AM). The range of Kr ions in a Ti-6Al-4V target estimated with SRIM is 389 nm. A thickness of 100 nm would allow for a homogeneous irradiation of the whole thickness. The samples would be mounted in a double-tilt heating holder. The dpa rate for an ion flux of 4x10e11 ions.cm-2.s-1 is estimated to ~ 10e-3 dpa.s-1. The Threshold Incubation Dose (TID) of the formation of c-loops is expected to be ~ 7 dpa at 25°C and ~ 3 dpa at 350°C. In order to be able to compare the final irradiated microstructure, the samples will be irradiated up to the same final dose (~8 dpa). Adjustments to these dose calculations will be made during the experiment. The irradiation dose rate will be maintained constant throughout the 4 irradiations.
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| Поле | Стойност |
|---|---|
| Awarded Institution | Michigan State University |
| Embargo End Date | 2024-05-09 |
| Facility Tech Lead | Mukesh Bachhav, Wei-Ying Chen |
| NSUF Call | FY 2018 RTE 3rd Call |
| PI | Carl Boehlert |
| Project Member | AIDA AMROUSSIA - Michigan State University (https://orcid.org/0000-0003-4891-3514) |
| Project Notes | Awarded on 09/17/2018 |
| Project Type | RTE |
| Publication | Heavy ion radiation damage in commercially pure Titanium and Ti-6Al-4V: Characterization of the microstructure and mechanical properties AIDA AMROUSSIA, Carl Boehlert, Frederique Pellemoine The 7th High Power Targetry Workshop 2018-06-04 - 2018-06-08 |
| RTE Number | 1558 |