METHOD OF PRODUCING ALUMINUM-BASED NEUTRON-ABSORBING MATERIAL CONTAINING LAYERS WITH TITANIUM DIBORIDE Russian patent published in 2019 - IPC C22C1/10 C22C21/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, namely to production of laminar material based on aluminum and its alloys containing layers with titanium diboride, and can be used as structural materials in aviation and in nuclear industry, which combine low specific weight with effective absorption of neutron radiation. Method of producing aluminum-based neutron absorbing material containing layers with titanium diboride involves obtaining aluminum melt with temperature higher than liquidus temperature with boron-containing particles, wherein melt is obtained with temperature of 150-200 °C above temperature liquidus containing boron-containing particles of 30–40 vol% titanium diboride particles with size of 1–40 mcm, as well as aluminum melt without particles of titanium diboride with temperature of 150–200 °C above liquidus temperature, which is first poured into heated horizontal mold of centrifugal casting, rotating with gravitation coefficient of 70–140, with formation of first metal layer on mold surface, then melt of protective flux is poured into mold and next layers of metal are formed, successively pouring to melt of flux melt of aluminum alloy containing particles of titanium diboride, then aluminum alloy melt without particles of titanium diboride, then melt of aluminum containing particles of titanium diboride, and then aluminum melt without particles of titanium diboride, besides, pouring of melt of next layers of metal on melt of flux is started after cooling of previous layer of metal to temperature of solidus.

EFFECT: production of large hollow cylindrical billets of neutron-absorbing material based on aluminum alloy containing metal layers with titanium diboride particles uniformly distributed over their thickness.

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