The small punch (SP) test on mechanical properties of the reactor pressure vessel (RPV) steel (A508-3) before and after irradiation was performed at -150 to 20℃, and then the relation between the tested results and standard test results was analyzed based on the empirical method. SEM analysis on the fractograph was carried out to study the mechanism of fracture under different temperatures. The impact property extracted from SP test on the irradiated specimen was compared with the standard impact test data, the result shows that the SP tested fracture energy can be a good value to character the irradiation hardening and embrittlement of the RPV steel. The tensile values which extracted from the SP test show the irradiation embrittlement effect as well.
YANG Wen
,
ZHONG Wei-Hua
. SMALL PUNCH TESTING OF THE EFFECT OF IRRADIATION ON MECHANICAL PROPERTY OF RPV STEEL[J]. Acta Metall Sin, 2011
, 47(9)
: 1205
-1209
.
DOI: 10.3724/SP.J.1037.2011.00214
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