Abstract
Designing a material from the atomic level to achieve a tailored response in extreme conditions is a grand challenge in materials research. Nanostructured metals and composites provide a path to this goal because they contain interfaces that attract, absorb and annihilate point and line defects. These interfaces recover and control defects produced in materials subjected to extremes of displacement damage, impurity implantation, stress and temperature. Controlling radiation-induced-defects via interfaces is shown to be the key factor in reducing the damage and imparting stability in certain nanomaterials under conditions where bulk materials exhibit void swelling and/or embrittlement. We review the recovery of radiation-induced point defects at free surfaces and grain boundaries and stabilization of helium bubbles at interphase boundaries and present an approach for processing bulk nanocomposites containing interfaces that are stable under irradiation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 443-449 |
| Number of pages | 7 |
| Journal | Materials Today |
| Volume | 16 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2013 |
Bibliographical note
Funding Information:This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences (DOE/BES) under Award No. 2008LANL1026 through the Center for Materials at Irradiation and Mechanical Extremes, an Energy Frontier Research Center. Access to the Center for Integrated Nanotechnologies, a DOE/BES sponsored user facility is acknowledged. Work on nanoporous metal synthesis was supported by LANL-LDRD program. Authors acknowledge discussions with R.G. Hoagland, J.P. Hirth, W.D. Nix, G.R. Odette, M. Nastasi, M.I. Baskes, A. Sutton, F. Williame, A.D. Rollett, R.S. Averback, P. Bellon, and T.M. Pollock.