TA2/316L爆炸复合板的点蚀行为

Pitting Corrosion Behavior of Explosive Clad Plate of TA2/316L

摘要:

采用X射线(XRD)、扫描电镜(SEM)、光学显微镜(OM)、动电位极化及浸泡腐蚀技术，研究了316L爆炸焊接前后的点蚀行为。XRD分析表明，相对于基体试样，316L侧焊缝和熔合区产生了第二相及δ铁素体相；动电位极化和浸泡腐蚀实验表明，316L基体及焊缝金属都表现出钝性，但焊接后的316L耐点蚀性降低，焊缝和熔合区被优先腐蚀

Abstract:

The pitting behavior of 316L before and after explosive welding was studied with X-ray diffraction(XRD), scanning electron microcopy(SEM), optical microscope(OM), potentiodynamic polarization and immersion corrosion technology. XRD analysis indicates that the second phase and δ ferrite phase emerged on the side weld and fusion area of 316L relative to the sample of 316L base; The result of potentiodynamic polarization and immersion corrosion test indicates that 316L base and welded metal had passivity, but welded 316L pitting resistance was decreased and welded seam and fusion area were corroded firstly