DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Ryu, Ho Jin | - |
dc.contributor.advisor | 류호진 | - |
dc.contributor.author | Chung, SeungHyoek | - |
dc.date.accessioned | 2019-09-03T02:47:24Z | - |
dc.date.available | 2019-09-03T02:47:24Z | - |
dc.date.issued | 2019 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843339&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/266549 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 원자력및양자공학과, 2019.2,[vi, 62 p. :] | - |
dc.description.abstract | High Entropy Alloys (HEAs) have higher configuration entropies than conventional alloys because they have more than 5 metallic elements as principal elements with an equiatomic or near equi-atomic ratio. The high configuration entropy makes HEAs form a simple solid solution phase such as BCC or FCC. HEAs are promising candidates for industrial structural materials due to their excellent mechanical properties. Despite the excellent mechanical properties, it is needed to apply various strengthening mechanisms to HEAs in order to broaden the application area of HEAs by improving its mechanical properties. In this study, CoCrFeMnNi HEAs with 0.5 wt% of $Y_2O_3$ were fabricated to make an oxide dispersion strengthened (ODS) HEA. ODS-HEA powder particles were prepared under various process conditions. To investigate the effects of milling and sintering process parameters, the microstructural analysis of powder and sintered bulk samples was conducted. A small angle neutron scattering (SANS) analysis was conducted to perform the statistical analysis of nano-sized oxide particles in ODS-HEA powder and sintered bulk samples under various cryo-milling and heat treatment | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | High entropy alloy▼amechanical-alloying▼acryo-milling▼aprocess parameter▼aparametric study▼aoxide-dispersion strengthened | - |
dc.subject | small angle neutron scattering▼aCoCrFeMnNi▼aspark plasma sintering | - |
dc.subject | 고엔트로피 합금▼a기계적합금화▼a초저온밀링▼a공정변수 | - |
dc.subject | 공정변수연구▼a산화물분산강화▼a중성자소각산란▼aCoCrFeMnNi▼a플라즈마 방전 소결 | - |
dc.title | Fabrication and microstructural study of oxide-dispersion strengthened CoCrFeMnNi high-entropy alloy via cryo-milling | - |
dc.title.alternative | 초저온 밀링을 이용한 산화물 분산강화 CoCrFeMnNi 하이엔트로피 합금의 제조 및 미세구조 분석 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :원자력및양자공학과, | - |
dc.contributor.alternativeauthor | 정승혁 | - |
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