@article{af67bc0002d44577a8c5ef93dffb1e99,
title = "Suppression of Void Nucleation in High-Purity Aluminum via Dynamic Recrystallization",
abstract = "The process of ductile fracture in metals often begins with void nucleation at second-phase particles and inclusions. Previous studies of rupture in high-purity face-centered-cubic metals, primarily aluminum (Al), concluded that second-phase particles are necessary for cavitation. A recent study of tantalum (Ta), a body-centered-cubic metal, demonstrated that voids nucleate readily at deformation-induced dislocation boundaries. These same features form in Al during plastic deformation. This study investigates why void nucleation was not previously observed at dislocation boundaries in Al. We demonstrate that void nucleation is impeded in Al by room-temperature dynamic recrystallization (DRX), which erases these boundaries before voids can nucleate at them. If dislocation cells reform after DRX and before specimen separation by necking, voids nucleation is observed. These results indicate that dislocation substructures likely plays an important role in ductile rupture.",
author = "Noell, {Philip J.} and Sills, {Ryan B.} and Boyce, {Brad L.}",
note = "Funding Information: The authors would like to acknowledge Jay Carroll, Doug Medlin, Helena Jin, Joseph Michael, and Sharlotte Kramer for beneficial discussions. Also, the authors would like to acknowledge Todd Huber, John Laing, Brad Salzbrenner, Richard Grant, Sara Dickens, Alice Kilgo, Chad Taylor, Bonnie McKenzie, Celedonio Jaramillo, Christina Profazi, and Curtis Mowry for their exceptional experimental support. 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 multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. DOE{\textquoteright}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. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Funding Information: The authors would like to acknowledge Jay Carroll, Doug Medlin, Helena Jin, Joseph Michael, and Sharlotte Kramer for beneficial discussions. Also, the authors would like to acknowledge Todd Huber, John Laing, Brad Salzbrenner, Richard Grant, Sara Dickens, Alice Kilgo, Chad Taylor, Bonnie McKenzie, Celedonio Jaramillo, Christina Profazi, and Curtis Mowry for their exceptional experimental support. 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 multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. DOE?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} 2019, The Minerals, Metals & Materials Society and ASM International.",
year = "2020",
month = jan,
day = "1",
doi = "10.1007/s11661-019-05457-w",
language = "English (US)",
volume = "51",
pages = "154--166",
journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",
issn = "1073-5623",
publisher = "Springer Boston",
number = "1",
}