Abstract
The neutron irradiation embrittlement of four different types of nuclear pressure vessel materials (three base metals and one weld material) were investigated by a magnetic nondestructive testing method, magnetic adaptive testing (MAT). The method is based on the measurement of minor magnetic hysteresis loops on Charpy specimens irradiated by neutrons in the BR2 reactor. Due to the neutron irradiation, the structure of the material was modified. The Charpy impact method is suitable for destructive characterization of material embrittlement. The results of Charpy impact test measurements at SCK CEN Belgian Nuclear Research Centre were compared with the nondestructively measured magnetic parameters. A definite correlation was found between magnetic descriptors and the ductile-to-brittle transition temperature (DBTT), regardless of the type of material or irradiation condition. The results suggest that this “calibration curve“ can be used to estimate the DBTT from non-destructive measurements.
Subject
General Materials Science,Metals and Alloys
Reference29 articles.
1. Degradation Due to Neutron Embrittlement of Nuclear Vessel Steels: A Critical Review About the Current Experimental and Analytical Techniques to Characterise the Material, with Particular Emphasis on Alternative Methodologies;Ferreño,2011
2. Monitoring the embrittlement of reactor pressure vessel steels by using the Seebeck coefficient
3. Application of the Seebeck effect for monitoring of neutron embrittlement and low-cycle fatigue in nuclear reactor steel
4. Ultrasonic attenuation, microstructure and ductile to brittle transition temperature in Fe-C alloys;Smith;Mater. Eval.,1993
Cited by
14 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献