| 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 |
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Received: 8 October 2015; Accepted: 23 January 2016. Published online: 5 September 2016. |
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| ABSTRACT |
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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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