经不同规范焊后热处理的核电用碳钢的力学性能比较

摘要

对人员闸门、设备闸门等核电设备部件用相近规格P265 GH钢板，按不同核电技术规格书要求的规范进行模拟焊后热处理，结果表明，三种规范的加热温度和保温时间对力学性能影响不明显，但冷却速率对母材冲击韧性影响明显。%Similar P265GH used in personnel airlock,equipment airlock and more nuclear parts were sub-ject to simulated postweld heat treatment of different nuclear specification.It was found that the mechani-cal properties were not obvious for heating temperature and holding time in three standards,but the impact toughness of the base metal was obvious affect for cooling rate.