Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김영도 | - |
dc.date.accessioned | 2022-12-12T00:13:38Z | - |
dc.date.available | 2022-12-12T00:13:38Z | - |
dc.date.issued | 2022-04 | - |
dc.identifier.citation | MATERIALS CHARACTERIZATION, v. 186, article no. 111767, Page. 1-7 | en_US |
dc.identifier.issn | 1044-5803;1873-4189 | en_US |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S1044580322000493?via%3Dihub | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/178158 | - |
dc.description.abstract | In this study, we examined the effect of stress relief annealing (SRA) temperatures on the microstructure and mechanical behavior of a Co-Cr-Mo alloy fabricated by selective laser melting (SLM). For the SRA, the as-built SLM samples were annealed at 750 °C and 1050 °C. In the as built SLM sample, the γ phase was mainly formed, but some ε phases were present together. The percentage of the ε phase increased significantly after SRA at 750 °C, and a microstructure with a 100% γ phase formed after SRA at 1050 °C. Changes in mechanical properties were characterized by an increase in both hardness and yield strength, while the elongation decreased after SRA at 750 °C. This was caused by the formation of the ε phase, which possesses high strength and hardness but brittleness. After SRA at 1050 °C, the hardness and yield strength decreased, and the elongation increased compared to the as-built SLM sample because of the decrease in the residual stress. In the γ phase of the Co-Cr-Mo alloy, strain-induced γ to ε martensitic transformation occurring during deformation, and it was more marked in the as-built SLM sample with high residual stress. Therefore, when the as-built sample was deformed, the brittle ε phase formed more rapidly than in the sample after SRA at 1050 °C, resulting in low elongation. | en_US |
dc.description.sponsorship | This research was supported by the Korea Institute of Industrial Technology ( KITECH JA-22-0010 ) and the Creative Materials Discovery Program (No. NRF-2019M3D1A1079227 ) through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT . | en_US |
dc.language | en | en_US |
dc.publisher | ELSEVIER SCIENCE INC | en_US |
dc.subject | Phase transformation | en_US |
dc.subject | Co-Cr-Mo alloy | en_US |
dc.subject | Selective laser melting | en_US |
dc.subject | Stress relief annealing | en_US |
dc.subject | Residual stress | en_US |
dc.title | Effect of phase transformation on the mechanical properties of the Co-Cr-Mo alloy fabricated by selective laser melting | en_US |
dc.type | Article | en_US |
dc.relation.volume | 186 | - |
dc.identifier.doi | 10.1016/j.matchar.2022.111767 | en_US |
dc.relation.page | 1-7 | - |
dc.relation.journal | MATERIALS CHARACTERIZATION | - |
dc.contributor.googleauthor | Im, Hyeon-Tae | - |
dc.contributor.googleauthor | Kim, Dae Ha | - |
dc.contributor.googleauthor | Kim, Young Do | - |
dc.contributor.googleauthor | Fadonougbo, Julien O. | - |
dc.contributor.googleauthor | Mo, Chan Bin | - |
dc.contributor.googleauthor | Park, Jae-Young | - |
dc.contributor.googleauthor | Park, Ki Beom | - |
dc.contributor.googleauthor | Kang, Jang-Won | - |
dc.contributor.googleauthor | Kang, Hyun-Su | - |
dc.contributor.googleauthor | Park, Hyung-Ki | - |
dc.sector.campus | S | - |
dc.sector.daehak | 공과대학 | - |
dc.sector.department | 신소재공학부 | - |
dc.identifier.pid | ydkim1 | - |
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