Effect of high-energy ball milling on the microstructure and mechanical properties of Ni-based ODS alloys fabricated using gas-atomized powder
- Title
- Effect of high-energy ball milling on the microstructure and mechanical properties of Ni-based ODS alloys fabricated using gas-atomized powder
- Author
- 김영도
- Issue Date
- 2022-10
- Publisher
- SPRINGER
- Citation
- JOURNAL OF MATERIALS SCIENCE, v. 57, NO. 38, Page. 18195-18204
- Abstract
- In this study, the effects of high-energy ball milling of atomized powder on the microstructure and mechanical properties of a Ni-based oxide dispersion strengthened (ODS) alloy were analyzed. Ni-based ODS alloys were prepared via high-energy ball milling and spark plasma sintering using a gas-atomized powder. The atomized powder with a dendrite structure contains Ni5Y and Al2Ni6Y3 intermetallic compounds, which are not observed in conventional alloys fabricated using elemental powder. These intermetallic phases are refined and decomposed during high-energy ball milling, affecting the formation and dispersion of oxides, which alters the microstructure and mechanical properties of Ni-based ODS alloys. The Ni-based ODS alloys fabricated using ball-milled powders had finer oxide particles and improved oxide dispersion compared to those fabricated using atomized powders. The grain size of the Ni-based ODS alloys fabricated using ball-milled powder was significantly reduced because of the inhibition of grain growth during the sintering process. In addition, Ni-based ODS alloys fabricated using ball-milled powders exhibited improved hardness and high-temperature compressive strength.
- URI
- https://link.springer.com/article/10.1007/s10853-022-07700-zhttps://repository.hanyang.ac.kr/handle/20.500.11754/178156
- ISSN
- 0022-2461;1573-4803
- DOI
- 10.1007/s10853-022-07700-z
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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