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Updated: May 4, 2026
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Sample Preparation and Experimental Design for In Situ Multi-Beam Transmission Electron Microscopy Irradiation Experiments
Published on: June 27, 2022
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Design of radiation tolerant materials via interface engineering
Weizhong Han1, Michael J Demkowicz, Nathan A Mara
1Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
Advanced Materials (Deerfield Beach, Fla.)
|December 20, 2013
Summary
Interface engineering in copper-niobium composites enhances irradiation tolerance, strength, and thermal stability. This novel strategy effectively annihilates defects induced by irradiation in nanolayered materials.
Area of Science:
- Materials Science
- Nanotechnology
- Nuclear Engineering
Background:
- Advanced materials are crucial for applications experiencing high radiation environments.
- Developing materials with combined high strength, thermal stability, and irradiation tolerance remains a significant challenge.
- Nanostructured composites offer unique properties but require precise interface control.
Purpose of the Study:
- To propose a novel interface engineering strategy for bulk nanolayered composites.
- To achieve simultaneous improvements in irradiation tolerance, strength, and thermal stability.
- To investigate a model face-centered-cubic (Cu)/body-centered-cubic (Nb) system.
Main Methods:
- Synthesis of bulk nanolayered Cu-Nb composites.
- Implementation of interface engineering with controlled sink efficiencies.
- Characterization of material properties under irradiation and thermal stress.
Main Results:
- Demonstrated superior irradiation tolerance in the engineered Cu-Nb composites.
- Achieved high strength and high thermal stability concurrently.
- Verified defect annihilation through controlled interface design.
Conclusions:
- The proposed interface engineering strategy is effective for enhancing material performance.
- Controlled interfaces in nanolayered composites are key to defect annihilation and improved properties.
- This approach offers a pathway for developing robust materials for demanding applications.
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