(1. 北京科技大学 钢铁共性技术协同创新中心，北京，100083； 2. 北京科技大学 材料科学与工程学院，北京，100083)
摘 要: 搭建一套基于二维X射线衍射技术的材料微结构在线检测系统，通过对系统实时采集的衍射数据沿方位角方向积分，对电解电容器铝箔材料立方织构进行在线检测，建立了衍射半峰宽、总衍射强度、织构体积量与铝箔立方织构含量间的关系，与传统离线的蚀坑定量检测法对比，立方织构含量绝对误差控制在2%，满足在线检测需求。最后，进行了系统相关因素对在线检测结果影响程度的研究。结果表明：运动速度和样品高度的变化对结果影响较小，而运动方向与轧向夹角以及机构倾角对结果影响较大，实际检测中应严格控制。
关键字: 铝箔；二维X射线衍射；立方织构；在线检测
（1. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China; 2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China）
Abstract:A micro structure of materials online detection system based on the two-dimensional X-ray diffraction was developed. On-line detection of cubic texture of aluminum foil for electrolytic capacitor was realized, which computed the integral data of real time acquisition of diffraction. The relationships among diffraction peak width, total diffraction intensity, texture volume and the cubic texture of aluminum foil were established. The results of traditional texture detection and on-line texture detection were compared, the absolute error was controlled within 2%, which met the needs of on-line detection. Finally, the effect of related online factors on the results was studied. The results show that the variation of the velocity and height of the sample has little influence on the results, while the direction of motion, the angle between the rolling direction and the inclination of the mechanism have great influence on the results, which should be strictly controlled in actual detection.
Key words: aluminum foil; two-dimensional X-ray diffraction; cube texture; on-line detection
