钢中夹杂物三维重构存在问题及解决方法  

Problems and solutions for three-dimensional reconstruction of inclusions in steel

作　　者：吴园园 金传伟 张继明 WU Yuanyuan;JIN Chuanwei;ZHANG Jiming(Institute of Research of Iron&Steel,Shagang,Jiangsu Province,Zhangjiagang 215625,China)

机构地区：[1]江苏省(沙钢)钢铁研究院,江苏张家港215625

出　　处：《冶金分析》2024年第11期28-33,共6页Metallurgical Analysis

摘　　要：聚焦离子束技术作为一种先进的微纳加工手段,在钢铁行业有着广泛的应用前景。文中主要以82A帘线钢铸坯和55SiCr弹簧钢铸坯为研究对象,利用聚焦离子束对其中的复合夹杂物进行系列切片及三维重构,发现在三维重构过程中存在如方法校正、物相衬度差异等对结果产生不良影响的因素。研究表明,通过引入偏移量计算公式,解决了重构形态失真、尺寸测定偏差大的难题;以及在系列切片过程中引入能谱面分析手段,实现了物相衬度差异不明显的物相重构可能性,有效地解决了目前三维重构过程中遇到的难题,使重构结果能更好地支撑项目研发。As an advanced means of micro and nano processing,the focused ion beam technology has a wide application prospect in the steel industry.In this paper,82A cord steel billets and 55SiCr spring steel billets were selected as the test materials.A series of slicing and three-dimensional(3D)reconstruction of the composite inclusions were performed using the focused ion beam(FIB).It was found that there were some factors having adverse effects on the results in the 3D reconstruction process,such as method calibration and phase contrast differences.The results showed that the problems of distortion of reconstructed morphology and large deviation of size determination could be solved by introducing the offset calculation formula.Moreover,the reconstruction possibility of phases with insignificant differences in phase contrasts was realized by introducing energy dispersive spectroscopy mapping analysis in the series slicing process,which effectively solved the difficulties encountered in the current 3D reconstruction process and made the reconstruction results better support the project of research and development.

关 键 词：聚焦离子束(FIB) 系列切片 三维重构 偏移量 物相衬度差异 

分 类 号：O785+.5[理学—晶体学] TF76[冶金工程—钢铁冶金]