Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이창희 | - |
dc.date.accessioned | 2019-12-08T12:39:31Z | - |
dc.date.available | 2019-12-08T12:39:31Z | - |
dc.date.issued | 2018-07 | - |
dc.identifier.citation | MATERIALS CHARACTERIZATION, v. 141, page. 49-58 | en_US |
dc.identifier.issn | 1044-5803 | - |
dc.identifier.issn | 1873-4189 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S1044580318303632?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/119254 | - |
dc.description.abstract | Numerous efforts have been focused on the fundamental research regarding kinetic spraying processes, but previous studies were biased to only few kinds of metallic materials. In particular, for Ta with body-centered cubic crystal structure, systematic studies are currently lacking in the literature. In this study, the characteristic deposition behaviors, microstructures, and mechanical properties of kinetic sprayed Ta under various impact conditions were systematically investigated. Generally, unusual features were usually related to strain-rate-dependent response (i.e. Peierls-Nabarro short range barriers) of Ta at high-temperature. This made thermal softening effect to be saturated above a certain degree of temperature, contributing to inferior deposition efficiency for the pre-heating at 600 degrees C than those of 400 and 500 degrees C by creating synergy with powder oxidation. In terms of microstructural evolutions, the dislocation density was abnormally increased at a certain powder preheating temperature (i.e., 600 degrees C), owing to the strain-rate-dependent response of Ta at high-temperature. On the other hand, grain refinement generated by rotational dynamic recrystallization was mainly observed under the higher kinetic energy condition (He carrier gas) at RT. Especially, the dislocation density and volume average domain size evaluated via high-resolution X-ray diffraction peak profile analysis were corresponding to the results of the microstructural observations. Additionally, the nanomechanical properties (i.e., nanohardness and elastic modulus) evaluated via nanoindentation tests were in good agreement with the results from transmission electron microscopy investigations. | en_US |
dc.description.sponsorship | This work was supported by the Technology Innovation Program funded by the Ministry of Trade, Industry & Energy (MI, Korea) [grant number 10060254]. We thanks to Prof. Jae-il Jang (Division of Materials Science and Engineering, Hanyang University, Republic of Korea) and Dr. Jae-Suk Jung (Doosan Heavy Industry. Co. Ltd., Republic of Korea) who provided insight and expertise that greatly assisted the research. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | ELSEVIER SCIENCE INC | en_US |
dc.subject | Kinetic (or cold) spray | en_US |
dc.subject | Thermomechanical response | en_US |
dc.subject | Tantalum | en_US |
dc.subject | Finite-element modeling | en_US |
dc.subject | High-resolution XRD | en_US |
dc.title | Characteristics of kinetic sprayed Ta in terms of the deposition behavior, microstructural evolution and mechanical properties: Effect of strain-rate-dependent response of Ta at high temperature | en_US |
dc.type | Article | en_US |
dc.relation.volume | 141 | - |
dc.identifier.doi | 10.1016/j.matchar.2018.04.023 | - |
dc.relation.page | 49-58 | - |
dc.relation.journal | MATERIALS CHARACTERIZATION | - |
dc.contributor.googleauthor | Kim, Jaeick | - |
dc.contributor.googleauthor | Bae, Gyuyeol | - |
dc.contributor.googleauthor | Lee, Changhee | - |
dc.relation.code | 2018002625 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | chlee | - |
dc.identifier.researcherID | K-2469-2019 | - |
dc.identifier.orcid | https://orcid.org/0000-0002-1775-3020 | - |
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