Evaluation of the Radiation Resistance and Thermal Stability of 15KH2MFA-A, Modifications a and B, Steel and Weld-Seam Metal

Evaluation of the Radiation Resistance and Thermal Stability of 15KH2MFA-A, Modifications a and B, Steel and Weld-Seam Metal

A comparative evaluation is made of the thermal stability and radiation resistance of VVER-1000 vessel materials and new compositions of 15Kh2MFA-A steel of modifications A and B with low nickel content 0.2–0.8%. For this, complex structural studies and mechanical tests were performed on samples of...

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Veröffentlicht in:Atomic energy (New York, N.Y.) N.Y.), 2014-10, Vol.116 (6), p.373-381
Hauptverfasser: Shtrombakh, Ya. I., Gurovich, B. A., Kuleshova, E. A., Frolov, A. S., Erak, D. Yu, Zhurko, D. A., Krikun, E. V.
Format: Artikel
Sprache:eng
Schlagworte:
Analysis
Brittleness
Embrittlement
Fluence
Grain size
Hadrons
Heat
Heat treatment
Heavy Ions
Intervals
Investigations
Irradiation
Materials research
Mechanical properties
Metals
Nickel
Nuclear Chemistry
Nuclear Energy
Nuclear Physics
Nuclear reactors
Physics
Physics and Astronomy
Radiation
Radiation resistance
Steel
Structural steels
Studies
Temper brittleness
Thermal energy
Thermal stability
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Zusammenfassung:A comparative evaluation is made of the thermal stability and radiation resistance of VVER-1000 vessel materials and new compositions of 15Kh2MFA-A steel of modifications A and B with low nickel content 0.2–0.8%. For this, complex structural studies and mechanical tests were performed on samples of materials in the following states: the initial state; after isothermal soaking at 330°C up to 7500 h, provoking grainboundary embrittlement of heat treatment in the interval of maximum development of reversible temper brittleness; and, accelerated irradiation to fluence corresponding to the service life of a reactor vessel to 60 or more years. The advantages of reducing the nickel content of steel with the new compositions, which is expressed in their improved radiation resistance and thermal stability, are shown.
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-014-9867-3