Fracture Mechanism of Borated Stainless Steel

The mechanical properties and fracture mechanism of irradiated and unirradiated boron containing Type 304 stainless steel are studied. Four different batches with different boron weight percentages are used. One of these batches was manufactured by a conventional wrought technique, while the others...

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Bibliographic Details
Published in:Nuclear technology 2000-05, Vol.130 (2), p.218-225
Main Authors: He, J. Y., Soliman, Salah E., Baratta, Anthony J., Balliett, Thomas A.
Format: Article
Language:English
Subjects:
Applied sciences
Boron
BORON ADDITIONS
Composition effects
DUCTILITY
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Fracture mechanics
FRACTURE PROPERTIES
Fracture toughness
Installations for energy generation and conversion: thermal and electrical energy
MATERIALS SCIENCE
METALLURGICAL EFFECTS
NEUTRON ABSORBERS
Neutron irradiation
Nuclear reactors
PHYSICAL RADIATION EFFECTS
Radiation damage
STAINLESS STEEL-304
TEMPERATURE DEPENDENCE
Thermal effects
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Summary:The mechanical properties and fracture mechanism of irradiated and unirradiated boron containing Type 304 stainless steel are studied. Four different batches with different boron weight percentages are used. One of these batches was manufactured by a conventional wrought technique, while the others were manufactured by a powder metallurgy technique. The irradiated specimens were subjected to a fluence level of 5 × 10 19 or 1 × 10 21 n/m 2 . The mechanical and fracture tests were performed at temperatures of 233, 298, and 533 K. No significant effects on the mechanical properties or fracture behavior were observed as a result of neutron irradiation and/or temperature. The ductility and toughness of the borated steel were found to decrease with increasing boron content. The effect of boride on void nucleation and linkage was found to play an important role in the fracture behavior of borated steel.
ISSN:0029-5450
1943-7471
DOI:10.13182/NT00-A3089