Radiation embrittlement of low-alloy steels

Results of phosphorus, copper and nickel effect on radiation induced yield stress increase and ductile-to-brittle transition temperature (DBTT) shift are presented. The synergetic interaction between phosphorus and nickel is observed. The results of Russian VVER-440 and VVER-1000 surveillance progra...

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Bibliographic Details
Published in:The International journal of pressure vessels and piping 2002-08, Vol.79 (8), p.619-636
Main Authors: Nikolaev, Yu.A, Nikolaeva, A.V, Shtrombakh, Ya.I
Format: Article
Language:English
Subjects:
Ductile-to-brittle transition temperature
Low-alloy steels
Radiation embrittlement
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Summary:Results of phosphorus, copper and nickel effect on radiation induced yield stress increase and ductile-to-brittle transition temperature (DBTT) shift are presented. The synergetic interaction between phosphorus and nickel is observed. The results of Russian VVER-440 and VVER-1000 surveillance programs and results of research programs on reactor pressure vessel (RPV) steel irradiation in surveillance channels of power reactors are discussed. The basic regularities of VVER-440 and VVER-1000 RPV steel are discussed. Trend curves for VVER-440 and VVER-1000 RPV steels are developed. The annealing effectiveness for VVER-440 and VVER-1000 RPV steel grades was compared. DBTT recovery of VVER-1000 RPV steels was found to be much lower than for VVER-440 RPV steels. Nickel was supposed to increase the post-irradiation residual DBTT shift of VVER-1000 type steels. Models for prediction of the post-irradiation residual DBTT shift of VVER-440 and VVER-1000 type steels were suggested.
ISSN:0308-0161
1879-3541
DOI:10.1016/S0308-0161(02)00065-0