Additive manufacturing of titanium-base alloys with equiaxed microstructures using powder blends
- Title
- Additive manufacturing of titanium-base alloys with equiaxed microstructures using powder blends
- Author
- 한정호
- Keywords
- Additive manufacturing; Direct energy deposition; Ti-based alloys; Powder blend; Anisotropy
- Issue Date
- 2020-12
- Publisher
- ELSEVIER
- Citation
- ADDITIVE MANUFACTURING, v. 36, article no. 101467, page. 1-8
- Abstract
- The microstructures and tensile properties of additively manufactured Ti-base alloys were investigated. Ti-6A14V and Co-Cr-Mo alloy powders were blended and used for directed energy deposition of bulk samples containing 5 and 10 wt% Co. The Ti-6Al-4V and 5 wto% Co samples exhibited an a phase at ji grain boundaries, which caused a significant reduction and anisotropy of the tensile ductility. A single-phase beta microstructure exhibiting equiaxed grains with a grain size of 36 1m, random texture, and isotropic tensile properties was obtained for the as-deposited 10 wt% Co sample. These phenomena could be ascribed to the high Co content and the resulting enhanced stability of the ji phase and the constitutional supercooling of the melt-pool.
- URI
- https://www.sciencedirect.com/science/article/pii/S2214860420308393?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/173013
- ISSN
- 2214-8604; 2214-7810
- DOI
- 10.1016/j.addma.2020.101467
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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