钢铁组织中MA岛含量的定量分析方法

Quantitative analysis methods of MA island content in iron and steel

MA岛是某些钢组织中的重要组成部分,钢中MA岛的含量对钢的韧性、强度等力学性能有一定影响。本试验针对MA岛定量方法的内容进行了分析,定量时首先对试样进行精细抛光和着色侵蚀,使MA岛侵成白亮色;然后用共聚焦显微镜采集图片,MA岛和基体组织对比黑白分明。接着利用中科仪的Sisc-Ias8金相分析软件根据二值分割进行定量,得出MA岛定量结果;最后描述了定量方法在双相钢中的应用。结果表明,MA岛定量技术弥补了以前定量分析方法的不足,能够快速、准确地分析出钢材组织中MA岛的百分含量。

MA island is an important part of some steel structure,whose content has a certain effect on the mechanical property such as ductility and strength.In this experiment,the quantitative method of MA island was analyzed.In the quantitative analysis,the samples were polished and eroded at first,and the MA islands were invaded into white.Then the confocal microscope was used to collect images,and the MA island had obvious contrast with the matrix organization.By using Sisc-Ias8 metallographic analysis software of Zhongkeyi and according to the two value segmentation to quantitate,the quantitative results of MA island were obtained.And finally the application of quantitative methods in the dual phase steel was described.The experiment showed that the quantitative technique of MA island could make up the deficiency of the previous quantitative analysis method,and rapidly and accurately analyze the percentage content of MA island in the steel structure.