【摘要】：對中溫壓力容器鋼12Cr2Mo1R進(jìn)行最小模擬焊后熱處理,并應(yīng)用階梯冷卻實驗對其焊后回火脆性進(jìn)行了評定和分析。結(jié)果表明,在-78~20℃內(nèi),試樣沖擊斷口形貌均為韌窩特征,沖擊功值高于54 J,中溫壓力容器鋼12Cr2Mo1R焊后具有優(yōu)良的抗回火脆性,這是因為其含P極低,同時含有較高的Mo在一定程度上阻礙了P在晶界的偏聚。
[Abstract]:The minimum simulated postweld heat treatment was carried out for 12Cr2Mo1R of medium-temperature pressure vessel steel. The tempering brittleness after welding was evaluated and analyzed by step cooling experiment. The results show that at -7820 鈩，

本文編號：2370459