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Title: Mechanical properties of neutron-irradiated nickel-containing martensitic steels: II. Review and analysis of helium-effects studies

 [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Flux Isotope Reactor; Metals-Processing Laboratory Users Facility; Shared Research Equipment Collaborative Research Center
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Nuclear Materials; Journal Volume: 357; Journal Issue: 1-3
Country of Publication:
United States

Citation Formats

Klueh, Ronald L, Sokolov, Mikhail A, and Hashimoto, Naoyuki. Mechanical properties of neutron-irradiated nickel-containing martensitic steels: II. Review and analysis of helium-effects studies. United States: N. p., 2006. Web. doi:10.1016/j.jnucmat.2006.05.049.
Klueh, Ronald L, Sokolov, Mikhail A, & Hashimoto, Naoyuki. Mechanical properties of neutron-irradiated nickel-containing martensitic steels: II. Review and analysis of helium-effects studies. United States. doi:10.1016/j.jnucmat.2006.05.049.
Klueh, Ronald L, Sokolov, Mikhail A, and Hashimoto, Naoyuki. Sun . "Mechanical properties of neutron-irradiated nickel-containing martensitic steels: II. Review and analysis of helium-effects studies". United States. doi:10.1016/j.jnucmat.2006.05.049.
title = {Mechanical properties of neutron-irradiated nickel-containing martensitic steels: II. Review and analysis of helium-effects studies},
author = {Klueh, Ronald L and Sokolov, Mikhail A and Hashimoto, Naoyuki},
abstractNote = {},
doi = {10.1016/j.jnucmat.2006.05.049},
journal = {Journal of Nuclear Materials},
number = 1-3,
volume = 357,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
  • Microstructural evolutions in tempered martensitic steels (TMS) under neutron-irradiation, at fusion relevant He/dpa ratios and dpa rates, were characterized using a novel in situ He-implanter technique. F82H-mod3 was irradiated at 500 C in HFIR to a nominal 9 dpa and 190 or 380 appm He in both in the as-tempered (AT) and 20% cold-worked (CW) conditions. In all cases, a high number density of 1-2 nm He-bubbles were observed, along with fewer but larger 10 nm void-like faceted cavities. The He-bubbles form preferentially on dislocations and various interfaces. A slightly larger number of smaller He bubbles were observed in themore » CW condition. The lower He/dpa ratio produced slightly smaller and fewer He-bubbles. Comparisons of these observations to the results in nano-structured ferritic alloy (NFA) MA957 provide additional evidence that TMS may be susceptible to He-embrittlement as well as void swelling at fusion relevant He concentrations, while NFA are much more resistant to these degradation phenomena.« less
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