Atom probe field ion microscopy characterizations of VVER steels

Conference · Thu Jul 01 04:00:00 EDT 1993

OSTI ID:10179030

Miller, M K; Jayaram, R ^[1]; Othen, P J ^[2]; Brauer, G ^[3]

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1. Oak Ridge National Lab., TN (United States)
2. Oxford Univ. (United Kingdom). Dept. of Materials
3. KAI, Inc., Dresden (Germany)

An atom probe field ion microscopy (APFIM) characterization of Soviet types 15Kh2MFA Cr-Mo-V (VVER 440) and 15Kh2NMFA Ni-Cr-Mo-V (VVER 1000) pressure vessel steels has been performed. Field ion microscopy has revealed that the lath boundaries in unirradiated VVER 440 and VVER 1000 steels are decorated with a thin film of brightly-imaging molybdenum carbonitride precipitates and some coarser vanadium carbides. Atom probe analysis has revealed significant enrichments of phosphorous at the lath boundaries.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10179030
• Report Number(s): CONF-930825--3; ON: DE93017864
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200
36 MATERIALS SCIENCE
360102
CHROMIUM-MOLYBDENUM STEELS
ION MICROSCOPY
MATERIALS
MICROSTRUCTURE
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
NONBOILING WATER COOLED
PRESSURE VESSELS
STEELS
STRUCTURE AND PHASE STUDIES
VANADIUM ADDITIONS
WWER TYPE REACTORS