The Actual Properties of WWER-440 Reactor Pressure Vessel Materials Obtained by Impact Tests of Subsize Specimens Fabricated out of Samples Taken from the RPV

Korolev, YN; Kryukov, A.; Nikolaev, YA; Platonov, P. A.; Shtrombakh, Ya. I.; Länger, Reinhard; Leitz, C.; Rieg, C-Y

doi:10.1520/stp37989s

Cited by 8 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Much work has been published in this area [138][139][140][141] as the test procedure has direct relevance to the monitoring of pressure vessel materials during service and a wide range of sizes have been used. The size range was discussed in the section on 'Fracture toughness' and thus here, the general characteristics, for clarity, are to be defined first, following Sainte Catherine et al 142 as an example.…”

Section: Charpy Testing With Sub-size Samplesmentioning

confidence: 99%

Requirements for and use of miniature test specimens to provide mechanical and creep properties of materials: a review

Hyde¹,

Sun²,

Williams³

2007

International Materials Reviews

118

View full text Add to dashboard Cite

The review is concerned with the use of miniature specimens to identify the mechanical/creep properties of metals and alloys. It is not intended to consider the nanoscales, which have been reviewed elsewhere, but focus on the size ranges and forms that are of use to areas such as alloy development, surveillance monitoring, effects of irradiation, properties of weld structures and remaining life. For many of these cases, there are technical advantages in the use of small specimens. Where possible, available reviews in this area are used and identified. The needs for small specimen sizes are considered, and the wide range of sizes of both conventional and more unusual specimen designs is reviewed. The potential effects of specimen size are considered: the microstructural features of the material, the effect of constraint and the actual region of the specimen that is undergoing deformation, and finally statistical approaches. The results of published studies are considered under the general groupings of yield/deformation behaviour, creep properties, toughness and fatigue, with an examination of the current state of interpretation of data from mini-specimens because interpretation is one of the key areas of interest. Finally, the current status of each area is considered, as certain designs of specimen will be better suited to answering specific technical questions. The need for standards for specific designs is also examined.

show abstract

Section: Charpy Testing With Sub-size Samplesmentioning

confidence: 99%

Requirements for and use of miniature test specimens to provide mechanical and creep properties of materials: a review

Hyde¹,

Sun²,

Williams³

2007

International Materials Reviews

118

View full text Add to dashboard Cite

show abstract

Examination of VVER-440 RPV steel re-irradiation behavior using materials from operating units

Shtrombakh

2000

International Journal of Pressure Vessels and Piping

View full text Add to dashboard Cite

Using Subsize Impact Bend Specimens for Estimation of Irradiation and Re-Irradiation Embrittlement of VVER RPV Steels

Nikolaev

Nikolaeva

2008

Journal of ASTM International

View full text Add to dashboard Cite

Results of impact bend tests of subsize Charpy V-notch-type (CVN) specimens are used in Russia for monitoring both re-irradiation embrittlement of the first generation of VVER-440 (including VVER-440/179 and VVER-440/230, i.e., projects B-179 and B-230) reactor pressure vessel (RPV) steels and irradiation embrittlement of VVER-440/213 RPV steels. For the first generation of VVER-440 RPVs, no surveillance program was foreseen and only subsize specimens (5 by 5 by 27.5 mm and 3 by 4 by 27 mm) can be manufactured from samples taken from the inner surface of the RPV for radiation embrittlement monitoring. For VVER-440/213 RPVs, 80 % of the surveillance specimens are irradiated with a lead factor greater than 20. Only four specimens of base metal and four specimen halves of weld seam material are irradiated with a lead factor less than 3. Taking into account that full-size (10 by 10 by 55 mm) CVN specimens were used in surveillance programs, using subsize specimens enables to solve the flux effect problem for VVER-440/213 RPV beltline materials and ensure representativity of surveillance programs. Application of subsize specimens for the estimation of radiation embrittlement requires developing a correlation between transition temperature values evaluated using test results of standard (full-size) and subsize CVN specimens. Such a correlation is discussed.

show abstract

The Actual Properties of WWER-440 Reactor Pressure Vessel Materials Obtained by Impact Tests of Subsize Specimens Fabricated out of Samples Taken from the RPV

Cited by 8 publications

References 1 publication

Requirements for and use of miniature test specimens to provide mechanical and creep properties of materials: a review

Requirements for and use of miniature test specimens to provide mechanical and creep properties of materials: a review

Examination of VVER-440 RPV steel re-irradiation behavior using materials from operating units

Using Subsize Impact Bend Specimens for Estimation of Irradiation and Re-Irradiation Embrittlement of VVER RPV Steels

Contact Info

Product

Resources

About