- Dispersion Behaviors of Y2O3 Particles Into Aisi 316L Stainless Steel by Using Laser Cladding Technology
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Eun-Kwang Park, Sung-Mo Hong, Jin-Ju Park, Min-Ku Lee, Chang-Kyu Rhee, Kyeong-Won Seol, Yang-Kyu Lee
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J Korean Powder Metall Inst. 2013;20(4):269-274.
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DOI: https://doi.org/10.4150/KPMI.2013.20.4.269
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- The present work investigated the dispersion behavior of Y_2O_3 particles into AISI 316L SS manufactured using laser cladding technology. The starting particles were produced by high energy ball milling in 10 min for prealloying, which has a trapping effect and homogeneous dispersion of Y_2O_3 particles, followed by laser cladding using CO_2 laser source. The phase and crystal structures of the cladded alloys were examined by XRD, and the cross section was characterized using SEM. The detailed microstructure was also studied through FE-TEM. The results clearly indicated that as the amount of Y_2O_3 increased, micro-sized defects consisted of coarse Y_2O_3 were increased. It was also revealed that homogeneously distributed spherical precipitates were amorphous silicon oxides containing yttrium. This study represents much to a new technology for the manufacture and maintenance of ODS alloys.
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Citations
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