Small punch test evaluation of neutron-irradiation-induced embrittlement of a Cr-Mo low-alloy steel

Journal Article · Wed Sep 15 04:00:00 EDT 2004 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2004.07.006· OSTI ID:20748641

Song, S -H ^[1]; Faulkner, R G ^[2]; Flewitt, P E.J. ^[3]; Marmy, P ^[4]; Weng, L -Q ^[1]

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1. Division of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen University Town, Xili, Shenzhen 518055 (China)
2. Institute of Polymer Technology and Materials Engineering, Loughborough University Loughborough, Leicestershire LE11 3TU (United Kingdom)
3. Interface Analysis Centre, University of Bristol, Bristol BS2 8BS (United Kingdom)
4. EPFL-CRPP, Fusion Technology, CH-5232 Villigen PSI (Switzerland)

Neutron-irradiation-induced embrittlement of a 2.25Cr1Mo steel is investigated by means of small punch testing along with scanning electron microscopy. There is an apparent irradiation-induced embrittlement effect after the steel is irradiated at about 400 deg. C for 86 days with a neutron dose rate of 1.75x10{sup -8} dpa/s. The embrittlement is mainly nonhardening embrittlement caused by impurity grain boundary segregation.

• OSTI ID: 20748641
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 1 Vol. 53; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DOSE RATES
EMBRITTLEMENT
EVALUATION
GRAIN BOUNDARIES
IMPURITIES
IRRADIATION
LOW ALLOY STEELS
MATERIALS TESTING
NEUTRONS
PRESSURE VESSELS
SCANNING ELECTRON MICROSCOPY
SEGREGATION