Neutron-absorption deformable boron-rich ferrous alloys |
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Authors: | Shota Nakaidze Otar Tsagareishvili |
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Affiliation: | Laboratory of Boron, Its Alloys and Compounds, F. Tavadze Institute of Metallurgy and Materials Science, Georgian Academy of Sciences, 15, Al. Kazbegi Ave., Tbilisi 380071, Georgia |
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Abstract: | The structure of the eutectic-type iron-boron alloys (up to 3.5 wt% B) crystallized at various velocities has been studied. It was established that due to temperature increase a coarse structure of the eutectic Fe+Fe2B transforms into a fine dendritic structure. High-temperature annealing leads to the destruction of columnar construction of the eutectic phase and boride dendrites subsequently transform into the inclusions of spherical shape. These processes are more active at high velocities leading to decrease of strength properties and increase of elasticity of the alloys. Such treatment makes possible hot repartition of the ingots from the alloys Fe+3%B through their forging so that the ingots can be rolled into 3-5 mm thick platelets. The obtained product may serve as a material applicable for the preparation of neutron-absorption protective constructions. |
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Keywords: | Neutron absorption Eutectic Bimetals Explosion welding Boron-rich alloy Forging Elasticity |
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