摘要
基于连续切片的金相照片,采用数字化处理技术对半固态7075铝合金的组织进行了三维重构。首先对再结晶重熔法制备的半固态7075铝合金进行分层制样和二维金相组织采集;然后经过图像定位、对齐、二值化、多层堆叠等数字化处理,进行三维组织重构,从而完成从二维信息到三维信息的转换,实现了显微组织三维可视化表征与三维观测。通过三维组织重构发现,所制备的半固态7075铝合金微观结构为固相颗粒状晶粒间隙中填充连通或孤立液相。用三维组织重构可以很方便地获取组织的空间结构特征,使组织表征更为准确和具体。
Based on metallograph of tomographic slices,the 3Dreconstruction method was applied for analyzing the microstructure characteristics of semi-solid 7075 Al alloy by the digital processing technique.The samples of semi-solid 7075 Al alloy were prepared by the recrystallization and partial remelting process,and then the two-dimensional photos of tomographic slices were obtained by metallographic microscope.After the digital processing process including locating,aligning,thresholding and stacking of multilayer images,the 3Dmicrostructure was reconstructed by converting the two-dimensional information to three-dimensional information.From the reconstructed 3D microstructure,it is found that the microstructure of semi-solid 7075 Al alloy prepared is connected or isolated liquid phase filled in the gaps among the solid phase.The space structure feature of microstructure of semi-solid alloys can be characterized easily by 3D microstructure,so the microstructure can be characterized more accurately.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2017年第4期354-357,共4页
Special Casting & Nonferrous Alloys
基金
甘肃省自然科学基金资助项目(145RJZA082)
关键词
三维重构
组织
7075铝合金
半固态合金
Three-dimensional Reconstruction
Microstructure
7075Al Alloy
Semi-solid Alloy
