SYMPOSIA PAPER Published: 01 January 1994

Study on the Irradiation Embrittlement of a Microalloyed Ferritic Steel


The embrittlement of microalloyed and grain-refined high tensile strength steel plates, which are to be extensively used as structural components in nuclear reactors in India, was studied after irradiating to neutron fluences between 1.7 x 1017 and 1.0 x 1019 n.cm2 (E > 1 MeV). The irradiations were carried out at less than 150°C. The results of room temperature tension tests and the instrumented impact tests over a range of temperature are presented. Irradiation stability of the steel is monitored by measuring the increase in yield strength and the elevation in the ductile-brittle-transition temperature after neutron irradiation. Attempts have been made to assess the extent of embrittlement as a function of neutron exposure. The results have been compared with both vintage and advanced pressure vessel steels.

Author Information

Ganguly, C
Bhabha Atomic Research Centre, Bombay, India
Viswanathan, UK
Bhabha Atomic Research Centre, Bombay, India
Balakrishnan, KS
Bhabha Atomic Research Centre, Bombay, India
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Developed by Committee: E10
Pages: 186–194
DOI: 10.1520/STP23936S
ISBN-EB: 978-0-8031-5262-5
ISBN-13: 978-0-8031-1488-3