Large area mapping of non-metallic inclusions in stainless steel by an automated system based on laser ablation |
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| Institution: | 1. Department of Mechanical Engineering, B.V.Bhoomaraddi College of Engineering and Technology, HUBLI 580031, India;2. Center for Material Science, B.V.Bhoomaraddi College of Engineering and Technology, HUBLI 580031, India;1. College of physics and electrical engineering, Anyang Normal University, Anyang, Henan 455000, PR China;2. Department of Physics and Engineering, and Key Laboratory of Material Physics, Zhengzhou University, Zhengzhou, Henan 450052, PR China;3. Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, PR China;1. Institut des Nanotechnologies de Lyon (INL), Université de Lyon, UMR5270, CNRS-INSA-ECL-UCBL Ecole Centrale de Lyon, 36 av. Guy de Collongue, Ecully 69134, France;2. Imec, Kapeldreef 75, Leuven B-3001, Belgium;1. Seconda Università di Napoli, via Roma 29, 81031 Aversa, Italy;2. Institute of Continuous Media Mechanics UB RAS, Acad. Korolev Str. 1, 614013 Perm, Russia;3. Perm National Research Polytechnic University, Komsomolsky pr. 29a, 614990 Perm, Russia |
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| Abstract: | Large area compositional mapping (>6 mm2) using a fast and automated system based on laser-induced plasma spectrometry is presented. The second harmonic of a flat top Nd:YAG laser beam was used to generate a microline plasma on the sample surface. The emitted light from the microline plasma was imaged onto the entrance slit of an imaging spectrograph and was detected by an intensified charge-coupled device to generate a spatially and spectrally resolved data set. Individual LIPS images, each measuring roughly 2500×2500 μm with spatial resolution of 50 μm between adjacent craters and 4.8 μm along the microline are presented. These large area maps were acquired in less than 1 min. Steel samples containing MnS and TiN inclusions were chosen as the most adequate for this study. The results are presented for the characterization of inclusionary material in stainless steel products in terms of morphology, distribution and abundance. |
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