In situ study of heavy ion irradiation response of immiscible Cu/Fe multilayers

Chen, Youxing; Li, Nan; Bufford, Daniel Charles; Li, Jin; Hattar, Khalid Mikhiel; Wang, Haiyan; Zhang, Xinghang

doi:10.1016/j.jnucmat.2016.04.009

In situ study of heavy ion irradiation response of immiscible Cu/Fe multilayers

Journal Article · Sat Apr 09 00:00:00 EDT 2016 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2016.04.009· OSTI ID:1338392

Chen, Youxing ^[1]; Li, Nan ^[2]; Bufford, Daniel Charles ^[3]; Li, Jin ^[4]; Hattar, Khalid Mikhiel ^[3]; Wang, Haiyan ^[5]; Zhang, Xinghang ^[6]

Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering; Los Alamos National Lab. (LANL), Los Alamos, NM (United States). MPA-CINT
Los Alamos National Lab. (LANL), Los Alamos, NM (United States). MPA-CINT
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering
Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering and Dept. of Electrical and Computer Engineering
Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering and Dept. of Mechanical Engineering; Purdue Univ., West Lafayette, IN (United States). School of Materials Engineering

By providing active defect sinks that capture and annihilate radiation induced defect clusters immiscible metallic multilayers with incoherent interfaces can effectively reduce defect density in ion irradiated metals. Although it is anticipated that defect density within the layers should vary as a function of distance to the layer interface, there is, to date, little in situ TEM evidence to validate this hypothesis. In our study monolithic Cu films and Cu/Fe multilayers with individual layer thickness, h, of 100 and 5 nm were subjected to in situ Cu ion irradiation at room temperature to nominally 1 displacement-per-atom inside a transmission electron microscope. Rapid formation and propagation of defect clusters were observed in monolithic Cu, whereas fewer defects with smaller dimensions were generated in Cu/Fe multilayers with smaller h. Moreover, in situ video shows that the cumulative defect density in Cu/Fe 100 nm multilayers indeed varies, as a function of distance to the layer interfaces, supporting a long postulated hypothesis.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1338392

Alternate ID(s):: OSTI ID: 1409776
OSTI ID: 1341168
OSTI ID: 22592631

Report Number(s):: SAND2016-12630J; 649924

Journal Information:: Journal of Nuclear Materials, Journal Name: Journal of Nuclear Materials Journal Issue: C Vol. 475; ISSN 0022-3115

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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