|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||Ion Irradiation Induced Defect Evolution in Ni and Ni-Based FCC Binary Alloys
||Ke Jin, Hongbin Bei, Yanwen Zhang
|On-Site Speaker (Planned)
In order to understand whether and how alloying elements can affect the irradiation-induced defect evolution, single-crystalline Ni, NiCo and NiFe were grown and irradiated with 3 MeV Au ions at fluences from 1x1013 to 5x1015 cm-2 at room temperature. The defect evolution was characterized using ion channeling technique. Experimental results show that NiFe has higher irradiation resistance than NiCo and Ni at low fluences. The damage levels are eventually saturated with increasing fluences in these materials but Ni reaches a saturation level at a lower fluence than the alloys. These results indicate that alloy elements, especially Fe, slow down damage accumulation process. Under high fluence irradiations, wider damage ranges are observed in Ni than in the alloys, indicating higher defect mobility in Ni.
This work was supported by Energy Dissipation to Defect Evolution (EDDE), an Energy Research Frontier Center supported by the U.S. Department of Energy, Basic Energy Sciences.
||Planned: A print-only volume