摘要
采用模拟焊接热循环的方法,研究了3种焊接线能量状态下的10Ni5CrMoV钢热影响区(HAZ)的组织和性能.试验结果表明,焊接线能量为E=19kJ/cm状态下的显微组织为马氏体加上贝氏体加粒状组织(M+B上+G),其冲击韧性AKV-60℃明显比焊接线能量为E=24kJ/cm和E=30kJ/cm状态下的AKV-60℃低;焊接线能量为E=24kJ/cm状态下的显微组织为马氏体加上贝氏体加粒状贝氏体(M+B上+B粒),其冲击韧性AKV-20℃为196J、AKV-60℃为183J.文章推荐在实际生产中采用焊接线能量E=24kJ/cm焊接工艺.
HAZ mechanical properties and microstructure of 10Ni5CrMoV steel were studied by means of welding thermal simulation, under three welding line energy states and the results indicate that the microstructure is M+B上+G and the impact toughness AKV-60 ℃is lower than that welding line energy E=24 kJ/cm and E=30 kJ/cm states when the welding line energy state is 19 kJ/cm, the microstructure is M+B上+B粒and the impact toughness AKV-20 ℃ is 196J?AKV-60 ℃ is 183J when the welding line energy is 24 kJ/cm. The welding technology with welding energy of E=24 kJ/cm is recommended for use in actual production.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2002年第5期66-70,共5页
Journal of Harbin Engineering University
