Radiation induced nanovoid shrinkage in Cu at room temperature: An in situ study

Fan, C.; Sreekar, A. R. G.; Shang, Z.; Li, Jin; Li, M.; Wang, H.; El-Azab, A.; Zhang, X.

doi:10.1016/j.scriptamat.2019.02.046

Title: Radiation induced nanovoid shrinkage in Cu at room temperature: An in situ study

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Abstract

Radiation induced void swelling is widely observed in a variety of metallic materials. Here, by using sputtering deposition technique, we have introduced faceted nanovoids into Cu films. In-situ Kr ion irradiation was subsequently performed at room temperature to investigate the evolution of nanovoids. Most nanovoids found to shrink gradually with increasing dose. Irradiation induced high-density vacancy clusters exist mostly in the formof stacking fault tetrahedrons. Phase fieldmodeling reveales that void shrinkage arises from biased absorption of interstitials. These findings provide insights to the physical mechanisms of radiation response of nanovoids in metallic materials.

Authors:

Fan, C. ^[1]; Sreekar, A. R. G. ^[1]; Shang, Z. ^[1]; Li, Jin ^[1]; Li, M. ^[2]; Wang, H. ^[1]; El-Azab, A. ^[1]; Zhang, X. ^[1]

Purdue Univ., West Lafayette, IN (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)

Publication Date:: Thu Mar 21 00:00:00 EDT 2019

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: US Department of the Navy, Office of Naval Research (ONR); USDOE Office of Nuclear Energy (NE)

OSTI Identifier:: 1503249

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Scripta Materialia

Additional Journal Information:: Journal Volume: 166; Journal Issue: C; Journal ID: ISSN 1359-6462

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Nanovoids; in situ radiation; phase-field modeling; stacking fault tetrahedron; void shrinkage

Citation Formats


                    Fan, C., Sreekar, A. R. G., Shang, Z., Li, Jin, Li, M., Wang, H., El-Azab, A., and Zhang, X. Radiation induced nanovoid shrinkage in Cu at room temperature: An in situ study.  United States: N. p., 2019. 
Web.  doi:10.1016/j.scriptamat.2019.02.046.

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                    Fan, C., Sreekar, A. R. G., Shang, Z., Li, Jin, Li, M., Wang, H., El-Azab, A., & Zhang, X. Radiation induced nanovoid shrinkage in Cu at room temperature: An in situ study.  United States.  https://doi.org/10.1016/j.scriptamat.2019.02.046

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                    Fan, C., Sreekar, A. R. G., Shang, Z., Li, Jin, Li, M., Wang, H., El-Azab, A., and Zhang, X. Thu .  
"Radiation induced nanovoid shrinkage in Cu at room temperature: An in situ study".  United States.  https://doi.org/10.1016/j.scriptamat.2019.02.046.  https://www.osti.gov/servlets/purl/1503249.

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@article{osti_1503249,

  title        = {Radiation induced nanovoid shrinkage in Cu at room temperature: An in situ study},

  author       = {Fan, C. and Sreekar, A. R. G. and Shang, Z. and Li, Jin and Li, M. and Wang, H. and El-Azab, A. and Zhang, X.},

  abstractNote = {Radiation induced void swelling is widely observed in a variety of metallic materials. Here, by using sputtering deposition technique, we have introduced faceted nanovoids into Cu films. In-situ Kr ion irradiation was subsequently performed at room temperature to investigate the evolution of nanovoids. Most nanovoids found to shrink gradually with increasing dose. Irradiation induced high-density vacancy clusters exist mostly in the formof stacking fault tetrahedrons. Phase fieldmodeling reveales that void shrinkage arises from biased absorption of interstitials. These findings provide insights to the physical mechanisms of radiation response of nanovoids in metallic materials.},

  doi          = {10.1016/j.scriptamat.2019.02.046},

  journal      = {Scripta Materialia},

  number       = C,

  volume       = 166,

  place        = {United States},

  year         = {Thu Mar 21 00:00:00 EDT 2019},

  month        = {Thu Mar 21 00:00:00 EDT 2019}

}

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