@article{ce17f0138abc4060b930c30842638c3b,
title = "Departing from the mutual exclusiveness of strength and ductility in nanocrystalline metals with vacancy induced plasticity",
abstract = "Strength and ductility are mutually exclusive in metallic materials. To break this relationship, we start with nanocrystalline Zirconium with very high strength and low ductility. We then ion irradiate the specimens to introduce vacancies, which promote diffusional plasticity without reducing strength. Mechanical tests inside the Transmission Electron Microscope reveal about 300% increase in plastic strain after self ion-irradiation. Molecular dynamics simulation showed that 4.3% increase in vacancies near the grain boundaries can result in about 60% increase in plastic strain. Both experimental and computational results support our hypothesis that vacancies may enhance plasticity through higher atomic diffusivity at the grain boundaries.",
author = "Zahabul Islam and Baoming Wang and Khalid Hattar and Huajian Gao and Aman Haque",
note = "Funding Information: This work was supported by the US National Science Foundation (DMR 1609060) and the Department of Energy (DE-NE0008259). This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, L.L.C., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA-0003525. The views expressed in the article do not necessarily represent the views of the U.S. DOE or the United States Government. Funding Information: This work was supported by the US National Science Foundation (DMR 1609060 ) and the Department of Energy ( DE-NE0008259 ). This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, L.L.C., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA-0003525. The views expressed in the article do not necessarily represent the views of the U.S. DOE or the United States Government. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd.",
year = "2018",
month = dec,
doi = "10.1016/j.scriptamat.2018.07.037",
language = "English (US)",
volume = "157",
pages = "39--43",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier Limited",
}