The experiment results show that the opportunity of post heat treatment has the greater influence on the martensitic steel weld,and post heat treatment of the martensitic steel should start after the martensite transform completely.

• 试验证明,后热处理时机的不同对马氏体耐热钢焊缝冲击韧度有比较大的影响,马氏体耐热钢的后热处理应在马氏体转变完全后开始较为合适。