石油精製用反応塔(11/4Cr-1/2Mo鋼)における経年劣化の監視試験法の提案

概要

論文の詳細を見る
A suitable surveillance test program was developed for evaluating the change in fracture toughness of material after long service operation using a retired petroleum reactor pressure vessel. The surveillance program is based on the correlation derived in advance from the standard Charpy absorbed energy (C_V) and fracture toughness (K_<Ic>, K_<Id>) data for pre-service material and on the Charpy energy (C_V) obtained from the periodic surveillance after service operation. It is here demonstrated that K_<Id>(C_V) estimated from the Charpy data shows a good agreement with valid K_<Id> determined experimentally for all the base metal, weld deposit and heat affected zone (HAZ) of the material. The validity of the surveillance program was also discussed.
社団法人日本材料学会の論文
1984-03-15