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Korean Journal of Metals and Materials > Volume 54(9); 2016 > Article
Korean Journal of Metals and Materials 2016;54(9): 698-710. doi: https://doi.org/10.3365/KJMM.2016.54.9.698
금속 미세조직의 3차원 이미지 관찰을 위한 순차적 박리 및 재구성 기술
김수현, 임영목
한국기계연구원 부설 재료연구소
Serial Sectioning and Reconstruction Techniques for Three-Dimensional Microscopy of Metallic Materials
Su-Hyeon Kim, Youngmok Rhyim
Korea Institute of Materials Science, Changwon 51508, Republic of Korea
Correspondence  Su-Hyeon Kim ,Tel: +82-55-280-3538, Email: shawnkim@kims.re.kr
Received: 8 October 2015;  Accepted: 23 January 2016.  Published online: 5 September 2016.
Experimental techniques for serial sectioning and reconstruction were investigated in the three-dimensional imaging of microstructures in metallic materials. Mechanical polishing equipped with a light optical microscope and a digital image processor was used for the serial sectioning and reconstruction. Different processing conditions were investigated for three different alloys: Al-Si alloy, Al-SiC composite, and AZ31 magnesium alloy. Proper selection of polishing cloths and polishing abrasives was pre-requisite for obtaining good slice images. The thicknesses of the slices were precisely controlled for each alloy by changing the mechanical polishing and chemical etching conditions. Two-step polishing was a very effective method for serial sectioning of multi-phase alloys with a soft matrix and hard particles such as Al-SiC composites. Image filtering with a delineate and median filter was very useful for successful image segmentation of multi-phase alloys.
Keywords: metals, casting, microstructure, optical microscopy, 3d imaging
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