dc.citation.conferencePlace |
SI |
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dc.citation.title |
INCASE 2021 |
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dc.contributor.author |
Seo, Eunhyeok |
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dc.contributor.author |
Kim, Namhun |
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dc.contributor.author |
Moon, Seung Ki |
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dc.contributor.author |
Sung, Hyo Kyung |
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dc.contributor.author |
Jung, Im Doo |
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dc.date.accessioned |
2024-01-31T21:36:43Z |
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dc.date.available |
2024-01-31T21:36:43Z |
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dc.date.created |
2022-01-07 |
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dc.date.issued |
2021-09-21 |
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dc.description.abstract |
Despite recent progress in achieving high mechanical properties of metal additive manufacturing, the low productivity represented by slow manufacturing speeds still remains a bottleneck of the technology. We improved the scanning speed of selective laser melting (SLM) with Ti-6Al-4V up to 1800 mm/s for high printing speed with affordable mechanical properties. In addition, the hot isostatic pressing (HIP) process was applied as post-treatment process to remove porosity of the high-speed printed SLM specimens. However, the HIP process caused a microstructural change from α′-lath martensite to a Widmanstӓtten α-lamellar structure. This microstructural change was most pronounced on the surface area and caused inter-lamellar fracture. Here, we investigate this phenomenon with microstructural and computational analysis. The results indicate that this deterioration phenomenon is highly dependent on surface roughness, which can be controlled with a build angle set-up. |
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dc.identifier.bibliographicCitation |
INCASE 2021 |
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dc.identifier.scopusid |
2-s2.0-85115175311 |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/77003 |
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dc.identifier.url |
https://www.springerprofessional.de/en/effect-of-build-angle-on-surface-roughness-of-high-speed-selecti/19588822 |
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dc.publisher |
Nanyang Technological University (NTU) |
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dc.title |
Effect of Build Angle on Surface Roughness of High-speed Selective Laser Melted Ti–6Al–4V Alloy |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2021-09-21 |
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