Mechanical properties and thermal neutron shielding efficiency of high B amorphous ribbons in the Fe-B-Mo-Cr system

For thermal neutron shielding applications, high boron amorphous ribbons with the compositions of Fe 72-x B 25 -Mo 3 Cr x (where x = 0, 5, 10, 15 or 20 at%) have been developed. From the morphological and compositional analysis of vein patterns formed on the fracture surfaces of the ribbons, the seg...

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Bibliographic Details
Published in:Metals and materials international 2016, 22(5), , pp.825-830
Main Authors: Moon, Jaewon, Yi, Seonghoon
Format: Article
Language:English
Subjects:
Boron
Characterization and Evaluation of Materials
Chemistry and Materials Science
Engineering Thermodynamics
Flexibility
Heat and Mass Transfer
Machines
Magnetic Materials
Magnetism
Manufacturing
Materials Science
Mechanical properties
Metallic Materials
Processes
Ribbons
Shielding
Solid Mechanics
Tapes (metallic)
Tensile strength
Thermal neutrons
재료공학
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Summary:For thermal neutron shielding applications, high boron amorphous ribbons with the compositions of Fe 72-x B 25 -Mo 3 Cr x (where x = 0, 5, 10, 15 or 20 at%) have been developed. From the morphological and compositional analysis of vein patterns formed on the fracture surfaces of the ribbons, the segregation of boron within shear band regions was identified and discussed with reference to “free volume concentration” and “temperature rise” models that had been proposed independently. High boron amorphous ribbons with optimum amounts of Cr exhibit excellent thermal neutron shielding efficiency in combination with mechanical properties such as tensile strength and bending flexibility. Moreover, corrosion resistance of the amorphous ribbons can be effectively enhanced through proper Cr additions, thereby expanding their structural applications in the nuclear industry.
ISSN:1598-9623
2005-4149
DOI:10.1007/s12540-016-6106-6