title: Measurement of Heavy Ion Irradiation Induced In-Plane Strain in Patterned Face-Centered-Cubic Metal Films: An in Situ Study.
abstract: Nanocrystalline Ag, Cu, and Ni thin films and their coarse grained counterparts are patterned using focused ion beam and then irradiated by Kr ions within an electron microscope at room temperature. Irradiation induced in-plane strain of the films is measured by tracking the location of nanosized holes. The magnitude of the strain in all specimens is linearly dose-dependent and the strain rates of nanocrystalline metals are significantly greater as compared to that of the coarse grained metals. Real-time microscopic observation suggests that substantial grain boundary migration and grain rotation are responsible for the significant in-plane strain.
authors.affiliation: State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering, China University of Petroleum-Beijing , Beijing 102249, China.
authors.forename: K Y
authors.initials: KY
authors.lastname: Yu
authors.affiliation: Department of Materials Science and Engineering, Texas A&M University , College Station, Texas 77843-3123, United States.|MPA-CINT, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States.
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Materials Science and Engineering, Texas A&M University , College Station, Texas 77843-3123, United States.
authors.forename: J
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, Texas A&M University , College Station, Texas 77843-3123, United States.
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.affiliation: School of Materials Engineering, Purdue University , West Lafayette, Indiana 47907 United States.|Department of Electrical Engineering, Purdue University , West Lafayette, Indiana 47907 United States.
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.affiliation: Nuclear Engineering Division, Argonne National Laboratory , Argonne, Illinois 60439, United States.
authors.forename: M A
authors.initials: MA
authors.lastname: Kirk
authors.affiliation: Nuclear Engineering Division, Argonne National Laboratory , Argonne, Illinois 60439, United States.
authors.forename: M
authors.initials: M
authors.lastname: Li
authors.affiliation: School of Materials Engineering, Purdue University , West Lafayette, Indiana 47907 United States.
authors.forename: X
authors.initials: X
authors.lastname: Zhang
keywords: In situ irradiation; grain activities; in-plane strain; patterned films