|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||In Operando Nano- and Micro-mechanical Characterization of Materials with Special Emphasis on In Situ Techniques
||In Situ Irradiation Induced Creep Measurements on Micropillar Specimens at Elevated Temperatures
||Sezer Özerinç, Robert S. Averback, William P. King
|On-Site Speaker (Planned)
We report in situ creep measurements on micropillar specimens at elevated temperatures under heavy ion bombardment. The developed custom apparatus measured irradiation induced creep on nanocrystalline (nc-) Cu micropillars of 1 μm diameter and 2 μm height at 200°C under 2.0 MeV Ar+ bombardment. The samples were prepared by magnetron sputtering and the micropillars were milled by focused ion beam. The experimental setup consists of a microfabricated Si beam transducer, a nanopositioner, and two interferometric laser displacement sensors. The Si beam compresses the micropillar and the laser sensor measures the creep through the change in the deflection of the Si beam. The measurements in the stress range 10–120 MPa indicate an irradiation induced fluidity of 0.20 dpa-1GPa-1, which is in reasonable agreement with previous results of bulge testing on nc-Cu. The developed apparatus provides an effective approach to accelerated characterization of materials for nuclear power applications.
||Planned: A print-only volume