Helium implantation of ultrafine grained tungsten within a TEM

K. Hattar, O. El-Atwani, M. Efe, T. J. Novakowski, A. Suslova, J. P. Allain

Research output: Contribution to journalArticle

Abstract

Many theoretical predictions have suggested that the confined length scales and increased interface density of various nanostructured materials may result in desired thermal, mechanical, and radiation properties. An important aspect of this for next generation nuclear reactors is understanding the change in swelling resulting from helium evolution in tungsten alloys, as a function of grain size and grain boundary type. This study investigated this using a new ion irradiation transmission electron microscope (TEM) facility that has been developed at Sandia National Laboratories and is capable of ion implanting helium at energies up to 20 keV. It was demonstrated in this feasibility study that helium could be implanted into an ultrafine grained tungsten TEM sample produced by severe plastic deformation. The size and density of the helium bubbles formed during the experiment appear nearly constant; while the larger voids formed appear to be dependent on the local microstructure. Future work is underway to both optimize the facility, as well as better understand the evolution of ultrafine grained tungsten resulting from both helium implantation and displacement damage.

Original languageEnglish (US)
JournalPrehospital and Disaster Medicine
Volume1645
DOIs
StatePublished - Nov 7 2014

Fingerprint

Helium
Tungsten
Electrons
Cereals
Ions
Nuclear Reactors
Nanostructures
Feasibility Studies
Plastics
Hot Temperature
Radiation

Keywords

  • ion-implantation
  • transmission electron microscopy (TEM)
  • W

ASJC Scopus subject areas

  • Emergency
  • Emergency Medicine

Cite this

Hattar, K., El-Atwani, O., Efe, M., Novakowski, T. J., Suslova, A., & Allain, J. P. (2014). Helium implantation of ultrafine grained tungsten within a TEM. Prehospital and Disaster Medicine, 1645. DOI: 10.1557/opl.2014.323

Helium implantation of ultrafine grained tungsten within a TEM. / Hattar, K.; El-Atwani, O.; Efe, M.; Novakowski, T. J.; Suslova, A.; Allain, J. P.

In: Prehospital and Disaster Medicine, Vol. 1645, 07.11.2014.

Research output: Contribution to journalArticle

Hattar, K, El-Atwani, O, Efe, M, Novakowski, TJ, Suslova, A & Allain, JP 2014, 'Helium implantation of ultrafine grained tungsten within a TEM' Prehospital and Disaster Medicine, vol 1645. DOI: 10.1557/opl.2014.323
Hattar K, El-Atwani O, Efe M, Novakowski TJ, Suslova A, Allain JP. Helium implantation of ultrafine grained tungsten within a TEM. Prehospital and Disaster Medicine. 2014 Nov 7;1645. Available from, DOI: 10.1557/opl.2014.323

Hattar, K.; El-Atwani, O.; Efe, M.; Novakowski, T. J.; Suslova, A.; Allain, J. P. / Helium implantation of ultrafine grained tungsten within a TEM.

In: Prehospital and Disaster Medicine, Vol. 1645, 07.11.2014.

Research output: Contribution to journalArticle

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