Helium segregation and transport behavior near ⟨100⟩ and ⟨110⟩ symmetric tilt grain boundaries in tungsten
نویسندگان
چکیده
منابع مشابه
Energetics of vacancy segregation to [100] symmetric tilt grain boundaries in bcc tungsten
The harsh irradiation environment poses serious threat to the structural integrity of leading candidate for plasma-facing materials, tungsten (W), in future nuclear fusion reactors. It is thus essential to understand the radiation-induced segregation of native defects and impurities to defect sinks, such as grain boundaries (GBs), by quantifying the segregation energetics. In this work, molecul...
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From the viewpoint of grain boundary structure a small-angle symmetric tilt boundary can be considered a boundary that is symmetrically mis-oriented by a small angle from a perfect Σ=1 boundary. The misoriention in these boundaries occurs during the re-crystallization period when annealing of the deformed material helps to develop the boundary. The development of the boundary occurs mainly by t...
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We apply the phase field crystal model to study the structure and energy of symmetric tilt grain boundaries of bcc iron in 3D. The parameters for the model are obtained by using a recently developed eight-order fitting scheme [A. Jaatinen et al., (2009)]. The grain boundary free energies we obtain from the model are in good agreement with previous results from molecular dynamics simulations and...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2018
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.5026617