SYMPOSIA PAPER Published: 01 January 1992

Effect of Neutron Irradiation on the Mechanical Properties of Microalloyed Steel for Reinforced Cement Concrete


Irradiation embrittlement of cold-twisted microalloyed bar to be used in the construction of reinforced cement concrete (RCC) structures surrounding the calandria or pressure vessels of nuclear reactors was studied at 1 × 1019 n/cm2 (E > 1 MeV). The irradiations were carried out at <423 K. The results of the room temperature tension and the instrumented impact tests are presented. The increase in the yield strength of 230 MPa and the 111 K increase in the Charpy 41-J index temperature matched well with those of vintage pressure vessel steels irradiated to the same fluence at <370 K. These trends were used to predict the irradiation embrittlement at the lower fluence of 1017 n/cm2 (E > 1 MeV) envisaged in the service life of such RCC structures.

Author Information

Ganguly, C
Bhabha Atomic Research Centre, Bombay, India
Anantharaman, S
Bhabha Atomic Research Centre, Bombay, India
Sivaramakrishnan, KS
Bhabha Atomic Research Centre, Bombay, India
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Developed by Committee: E10
Pages: 1304–1310
DOI: 10.1520/STP17947S
ISBN-EB: 978-0-8031-5187-1
ISBN-13: 978-0-8031-1477-7