Abstract
• The dispersed nanoclusters can be directly dissolved under the pulsed electric current. • The agminated nanoclusters first merged and then dissolved like the dispersed nanoclusters. • The merging and dissolving processes were aided by the higher current density around them that caused by the conductivity difference. • The mechanical properties of the deteriorated reactor pressure vessel were improved after the pulsed electric current treatment. • 94% of nanoclusters were dissolved. Copper-rich nanocluster as one of the radiation induced defects (such as nanoclusters, vacancies, interstitial atoms and dislocation loops, etc.) will generate during long-term high-temperature service and damage the performance of the reactor pressure vessel (RPV). Here it was found that 94% of nanoclusters in the aged simulated material were removed under the pulsed electric current. The average spacing between nanoclusters increased by 170%, thus relieving the embrittlement degree. As the numerical calculation results shown that the dispersed nanoclusters can be directly dissolved. The agminated nanoclusters first merged and then dissolved like the dispersed nanoclusters.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call