Microstructural Analysis of Asymmetric Dilution by Rotating Direct Metal Deposition

• Autorzy: Choi Byungjoo , Lee Gwang-Jae , Yeom Hyun-Ho , Lee Moon-Gu , Jeon Yongho

Identyfikatory

DOI

10.24425/amm.2019.127573

• Języki publikacji: EN

Abstrakty

EN

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 bulkdiffused 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.

Słowa kluczowe

EN

rotating direct metal deposition; asymmetric dilution; cross-sectional analysis; microstructure; metallurgical composition

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 535--538
• Opis fizyczny: Bibliogr. 5 poz., fot., rys., tab.

Twórcy

autor

Choi Byungjoo

• Ajou University, Department of Mechanical Engineering, 206, World Cup-Ro, Yeongtong-Gu, Suwon-Si, Gyeonggi 16499, Korea

autor

Lee Gwang-Jae

• Eurovision Laser Co., Ltd. Gunpo, Republic of Korea

autor

Yeom Hyun-Ho

• Ajou University, Department of Mechanical Engineering, 206, World Cup-Ro, Yeongtong-Gu, Suwon-Si, Gyeonggi 16499, Korea

autor

Lee Moon-Gu

• Ajou University, Department of Mechanical Engineering, 206, World Cup-Ro, Yeongtong-Gu, Suwon-Si, Gyeonggi 16499, Korea

autor

Jeon Yongho

• Ajou University, Department of Mechanical Engineering, 206, World Cup-Ro, Yeongtong-Gu, Suwon-Si, Gyeonggi 16499, Korea

Bibliografia

• [1] G. Xu, M. Kutsuna, Z. Liu, K. Yamada, Surf. & Coat. Tech. 201, 1138-1144 (2006).
• [2] Deloro, „Stellite 6 Alloy Technical Data”, www.stellite.com.
• [3] M. A. Montealegre, A. T. Perez, J. L. Arias, P. Rey, G. Castro, M. Gonzalez, Research Gate 805, 298-303 (2010).
• [4] A. S. Oliveira, P. S. Silva, R.M.C. Vilar, Surf. & Coat. Tech. 153, 203-209 (2002).
• [5] G. S. Ham, C. O. Kim, S. H. Park, K. A. Lee, J. of Korean Powder Metall. Inst. 24 (5), 370-376 (2017).

Uwagi

EN

1. This work was supported by the Energy Efficiency of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy and Ministry of Trade, Industry & Energy (MOTIE ) (No. 20165010300800).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).