Deuterium and helium ion irradiation of nanograined tungsten and tungsten–titanium alloys

Buzi, L.; Yeh, M.; Yeh, Y-W.; Donaldson, O. K.; Patino, M. I.; Trelewicz, J. R.; Yao, N.; Doerner, R.; Koel, B. E.

doi:10.1016/j.nme.2019.100713

Title: Deuterium and helium ion irradiation of nanograined tungsten and tungsten–titanium alloys

Journal Article · 30 November 2019 · Nuclear Materials and Energy

DOI: https://doi.org/10.1016/j.nme.2019.100713 · OSTI ID:1803188

Buzi, L. ^[1];

^[2]; Yeh, Y-W. ^[3];

^[4]; Patino, M. I. ^[5]; Trelewicz, J. R. ^[6]; Yao, N. ^[3]; Doerner, R. ^[5]; Koel, B. E. ^[2]

Princeton Univ., NJ (United States). Dept. of Chemical and Biological Engineering; OSTI
Princeton Univ., NJ (United States). Dept. of Chemical and Biological Engineering
Princeton Univ., NJ (United States).Princeton Inst. for the Science and Technology of Materials (PRISM)
Stony Brook Univ., NY (United States). Dept. of Materials Science and Chemical Engineering
Univ. of California, San Diego, CA (United States). Center for Energy Research
Stony Brook Univ., NY (United States). Dept. of Materials Science and Chemical Engineering; Stony Brook Univ., NY (United States). Inst. for Advanced Computational Science

Tungsten (W), a primary candidate for the plasma-facing components of nuclear fusion reactors (e.g. the divertor region in ITER) is susceptible to cracks, blisters, bubbles, and other morphological changes when irradiated with energetic particles. This work investigated two new materials, nanograined W and a nanograined W–Ti alloy, for potential use as plasma-facing materials. Their retention properties and morphological changes after exposure to deuterium (D) and helium (He) plasma at 50 eV and surface temperatures of 500 and 1000 K were analyzed. Nanograined W was found to have smaller blisters and be less prone to fuzz formation than commonly-utilized micro-grain polycrystalline W. Additionally, the nanograined W–Ti alloy exhibited a lower concentration of blisters on its surface than pure W, including nanograined W.

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Research Organization:: Princeton Univ., NJ (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); State Univ. of New York (SUNY), Albany, NY (United States); Triad National Security, LLC, Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: 89233218CNA000001; NA0003525; SC0017899; SC0019308

OSTI ID:: 1803188

Journal Information:: Nuclear Materials and Energy, Journal Name: Nuclear Materials and Energy Journal Issue: C Vol. 21; ISSN 2352-1791

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
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Title: Deuterium and helium ion irradiation of nanograined tungsten and tungsten–titanium alloys

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