新型双相抗点蚀铸造不锈钢的组织及耐蚀性能研究

STUDY ON MICROSTRUCTURE AND PROPERTY OF NEW CAST STAINLESS STEEL WITH DUPLEX PHASE STRUCT URE OF RESISTANCE TO PITTING CORROSION

采用金相显微镜、X射线衍射、电子探针、扫描电镜 (SEM)和扫描隧道显微镜 (STM)研究了新型超低碳、低铬镍、高硅双相铸造不锈钢的组织及其点蚀行为 ,结果表明 ,新钢种具有比C1

The microstructure an d pitting behavior of a new type cast stainless s teel with duplex phase structure,super l ow carbon,low chromium nickel and high s ilicon contents were investigated by the means of metallographic microscope,X ra y diffraction spectrum,electronic probe, scanning electron microscope(SEM) and sc anning tunneling microscope(STM).The res ults showed that the new type steel had a better resistance to pitting corrosion than that of the C15 steel.