(1. 北京科技大學(xué) 鋼鐵共性技術(shù)協(xié)同創(chuàng)新中心，北京，100083； 2. 北京科技大學(xué) 材料科學(xué)與工程學(xué)院，北京，100083)
摘 要: 搭建一套基于二維X射線衍射技術(shù)的材料微結(jié)構(gòu)在線檢測系統(tǒng)，通過對系統(tǒng)實(shí)時采集的衍射數(shù)據(jù)沿方位角方向積分，對電解電容器鋁箔材料立方織構(gòu)進(jìn)行在線檢測，建立了衍射半峰寬、總衍射強(qiáng)度、織構(gòu)體積量與鋁箔立方織構(gòu)含量間的關(guān)系，與傳統(tǒng)離線的蝕坑定量檢測法對比，立方織構(gòu)含量絕對誤差控制在2%，滿足在線檢測需求。最后，進(jìn)行了系統(tǒng)相關(guān)因素對在線檢測結(jié)果影響程度的研究。結(jié)果表明：運(yùn)動速度和樣品高度的變化對結(jié)果影響較小，而運(yùn)動方向與軋向夾角以及機(jī)構(gòu)傾角對結(jié)果影響較大，實(shí)際檢測中應(yīng)嚴(yán)格控制。
關(guān)鍵字: 鋁箔；二維X射線衍射；立方織構(gòu)；在線檢測
（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
