, Volume 69, Issue 11, pp 2206–2213 | Cite as

Microstructure Evolution and Mechanical Response of Nanolaminate Composites Irradiated with Helium at Elevated Temperatures



We summarize recent work on helium (He) interaction with various heterophase boundaries under high temperature irradiation. We categorize the ion-affected material beneath the He-implanted surface into three regions of depth, based on the He/vacancy ratio. The differing defect structures in these three regions lead to the distinct temperature sensitivity of He-induced microstructure evolution. The effect of He bubbles or voids on material mechanical performance is explored. Overall design guidelines for developing materials where He-induced damage can be mitigated in materials are discussed.



The authors gratefully acknowledge support from the US Department of Energy, Office of Science, Office of Basic Energy Sciences, and LANL Lab Directed R&D (LDRD). This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the US Department of Energy (DOE) Office of Science. Los Alamos National Laboratory, an affirmative action, equal opportunity employer, is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the US Department of Energy under contract DE-AC52-06NA25396.


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Copyright information

© The Minerals, Metals & Materials Society 2017

Authors and Affiliations

  1. 1.Center for Integrated NanotechnologiesLos Alamos National LaboratoryLos AlamosUSA
  2. 2.Institute for Materials ScienceLos Alamos National LaboratoryLos AlamosUSA
  3. 3.Department of Materials Science and EngineeringTexas A&M UniversityCollege StationUSA

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