Abstract
This paper discusses applications of spherical nanoindentation stress-strain curves in characterizing the local mechanical behavior of materials with modified surfaces. Using ion-irradiated tungsten as a specific example, this paper demonstrates that a simple variation of the indenter size (radius) can identify the depth of the radiation-induced-damage zone, as well as quantify the behavior of the damaged zone itself. Using corresponding local structure information from electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) we look at (a) the elastic response, elasto-plastic transition, and onset of plasticity in ion-irradiated tungsten, zirconium and 304 stainless steel under indentation, and compare their relative mechanical behavior to the unirradiated state, (b) correlating these changes to the different grain orientations as a function of (c) irradiation from different sources (such as He, W, and He+W for tungsten samples).
Original language | English (US) |
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Title of host publication | Minerals, Metals and Materials Series |
Publisher | Springer International Publishing |
Pages | 617-635 |
Number of pages | 19 |
ISBN (Print) | 9783030046385, 9783030046392, 9783319515403, 9783319651354, 9783319728520, 9783319950211 |
DOIs | |
State | Published - 2019 |
Externally published | Yes |
Event | 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019 - Boston, United States Duration: Aug 18 2019 → Aug 22 2019 |
Publication series
Name | Minerals, Metals and Materials Series |
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ISSN (Print) | 2367-1181 |
ISSN (Electronic) | 2367-1696 |
Conference
Conference | 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019 |
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Country/Territory | United States |
City | Boston |
Period | 8/18/19 → 8/22/19 |
Bibliographical note
Publisher Copyright:© 2019, The Minerals, Metals & Materials Society.
Keywords
- Electron back-scattered diffraction
- Nanoindentation stress-strain
- Radiation damage gradient
- Stress saturation
- Transmission electron microscopy