Self-ion irradiation effects on mechanical properties of nanocrystalline zirconium films

Wang, Baoming; Haque, M. A.; Tomar, Vikas; Hattar, Khalid

doi:10.1557/mrc.2017.51

Self-ion irradiation effects on mechanical properties of nanocrystalline zirconium films

Journal Article · Thu Jul 13 00:00:00 EDT 2017 · MRS Communications

DOI:https://doi.org/10.1557/mrc.2017.51· OSTI ID:1373291

Wang, Baoming ^[1]; Haque, M. A. ^[1]; Tomar, Vikas ^[2]; Hattar, Khalid ^[3]

Pennsylvania State Univ., University Park, PA (United States)
Purdue Univ., West Lafayette, IN (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Zirconium thin films were irradiated at room temperature with an 800 keV Zr⁺ beam using a 6 MV HVE Tandem accelerator to 1.36 displacement per atom damage. Freestanding tensile specimens, 100 nm thick and 10 nm grain size, were tested in-situ inside a transmission electron microscope. Significant grain growth (>300%), texture evolution, and displacement damage defects were observed. Here, stress-strain profiles were mostly linear elastic below 20 nm grain size, but above this limit the samples demonstrated yielding and strain hardening. Experimental results support the hypothesis that grain boundaries in nanocrystalline metals act as very effective defect sinks.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1373291

Report Number(s):: SAND--2017-7604J; 655493

Journal Information:: MRS Communications, Journal Name: MRS Communications Journal Issue: 3 Vol. 7; ISSN 2159-6859; ISSN applab

Publisher:: Materials Research Society - Cambridge University PressCopyright Statement

Country of Publication:: United States

Language:: English

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Application of In Situ TEM to Investigate Irradiation Creep in Nanocrystalline Zirconium Bufford, Daniel C.; Barr, Christopher M.; Wang, Baoming JOM, Vol. 71, Issue 10 https://doi.org/10.1007/s11837-019-03701-7	journal	August 2019
Listening to Radiation Damage In Situ: Passive and Active Acoustic Techniques Dennett, Cody A.; Choens, R. Charles; Taylor, Caitlin A. JOM, Vol. 72, Issue 1 https://doi.org/10.1007/s11837-019-03898-7	journal	November 2019

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