热处理温度对爆炸焊接T2+Q345R复合板组织和性能的影响

Effect of Heat Treatment Temperature on Microstructure and Properties of T2+Q345R Composite Plate by Explosive Welding

研究了热处理对爆炸焊接T2+Q345R复合板组织和性能的影响.结果表明,热处理温度对T2+Q345R复合板的剪切、拉脱、伸长率等影响不明显,650℃以下,复层晶粒度增长缓慢,界面处异种金相组织厚度较爆炸态变化不大;650℃以上,随温度升高,复层晶粒度急剧增长,界面处异种金相组织厚度较爆炸态快速增加.

The heat treatment experiments have been carried out on T2 and Q345R explosive welding composite plate at series temperatures,and the changes of its structure and properties are observed.The results show that the heat treatment temperature has no obvious effect on the shear strength,tensile strength and elongation of T2-Q345 clad plate.When the temperature is below 600℃,the clad grain size grows slowly,and the thickness of heterogeneous full-phase microstructure at the interface has little change compared"with that of the explosive state.When it is above 600℃,with the increase of temperature,the grain size of clad layer grows rapidly,and the thickness of dissimilar metallographic structure at the interface increases rapidly.