TY - JOUR N2 - In this study, cross-section analysis was performed on a novel rotating direct-metal deposition method capable of preliminary surface treatment and damage repair of cylindrical inner walls. The cross-sectional shape, microstructure, and metallurgical composition were analyzed to verify feasibility. No defects such as porosity or cracks were found in the cross section, but asymmetric dilution was observed because of the non-coaxial powder nozzle. Microstructural coarsening was confirmed over a higher dilution area by high-magnification optical microscope images. As the dilution ratio was increased, hard carbides in the dendrite were bulk-diffused into inter-dendrite spaces, and the toughness was lowered by Fe penetration into the deposit. Therefore, the increased laser heat input can be modulated to the typical dilution by decreasing the laser scanning velocity. L1 - http://journals.pan.pl/Content/111313/PDF/AMM-2019-2-16-Jeon.pdf L2 - http://journals.pan.pl/Content/111313 PY - 2019 IS - No 2 EP - 538 DO - 10.24425/amm.2019.127573 KW - Rotating direct metal deposition KW - Asymmetric dilution KW - Cross-sectional analysis KW - microstructure KW - Metallurgical composition A1 - Choi, Byungjoo A1 - Lee, Gwang-Jae A1 - Yeom, Hyun-Ho A1 - Lee, Moon-Gu A1 - Jeon, Yongho PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 64 DA - 2019.06.27 T1 - Microstructural Analysis of Asymmetric Dilution by Rotating Direct Metal Deposition SP - 535 UR - http://journals.pan.pl/dlibra/publication/edition/111313 T2 - Archives of Metallurgy and Materials ER -