Title |
In Situ Measurement of Heavy-ion-irradiation-induced Plastic Flow of Amorphous CuTiAg Micropillars |
Author(s) |
Sezer Ozerinc1; Robert S. Averback1; William P. King1; 1University of Illinois at Urbana-Champaign |
Abstract |
We report quantitative in-situ measurements of irradiation-induced creep
deformation under heavy-ion irradiation.
Cu56Ti38Ag6 amorphous micropillars of 700 nm
diameter and 2 μm height were irradiated with 2.3 MeV Ne+ ions
under uniaxial compression at room temperature. Amorphous samples were prepared
by ball milling and subsequent hot compression; and micropillars were milled by
focused ion beam. The in-situ tests were performed by utilizing a custom setup
that consists of a microfabricated silicon beam force sensor, an
interferometric laser sensor, and a nanopositioner. The silicon beam provided
the applied force. The stress and strain on the micropillar was calculated from
the laser sensor measurement of silicon beam deflection, the nanopositioner
position, and the calibrated silicon beam spring constant. The applied stress
in the range 10-100 MPa resulted in Newtonian flow. The measured
radiation-induced fluidity values are in good agreement with the previous
molecular dynamics simulation result of 3×10-9
Pa-1dpa-1. |
Included in Proceedings? |
No |
Symposium |
Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Modeling |
Organizer(s) |
Peter Hosemann, UC Berkeley; Julie D. Tucker, Knolls Atomic Power Laboratory; James I Cole, Idaho National Laboratory; Todd R. Allen, University of Wisconsin-Madison; |
Session |
Ion Beam Irradiation and Advanced Characterization Techniques |
Session
Chair(s) |
James Cole, Idaho National Laboratory; |
Date |
02/17/2014 |
Time |
4:20 PM - 4:40 PM |
Location |
San Diego Convention Center |
Room |
33B |