Thermal Aging Embrittlement Evaluation of Nuclear Primary Pipe Steel by Ductile to Brittle Transition Test

Fei Xue; Wei Wei Yu; Zhao Xi Wang; Guo Gang Shu; Xi Tao Wang; Jia Wang Jiang

doi:10.4028/www.scientific.net/AMR.97-101.797

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 97-101Thermal Aging Embrittlement Evaluation of Nuclear...

Thermal Aging Embrittlement Evaluation of Nuclear Primary Pipe Steel by Ductile to Brittle Transition Test

Abstract:

In order to determine the ductile to brittle transition behavior of nuclear primary pipe material (Z3CN20.09M) during the thermal aging procedure, instrumented impact tests at different temperatures were performed on Z3CN20.09M aged at 400°C for up to 3000 hours. The load-deflection curves from the instrumented impact tests described both the loading and the fracture stages, from which the dynamic strengths and energy were calculated. The results indicated that the thermal aging decreases the impact energy and shifts the ductile-to-brittle transition curves to higher temperatures.