- Microstructural Evolution during Hot Deformation of P/M Copper using Processing Map
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Soo-Ho Chang, Young-Moo Kim, Kyung-Chae Park
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J Korean Powder Metall Inst. 2012;19(2):134-139.
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DOI: https://doi.org/10.4150/KPMI.2012.19.2.134
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- P/M coppers are subjected to the isothermal compression tests at the strain rate ranging from 0.01 to 10.0 s-1 and the temperature from 200 to 800°C. The processing map reveals the dynamic recrystallization (DRX) domain in the following temperature and strain rate ranges: 600-800°C and 0.01-10.0 s-1, respectively. In the domain, the region at temperature of 600°C and strain rate of 10-2s-1 shows peak efficiency. From the kinetic analysis, the apparent activation energy in the DRX domain is 190.67 kJ/mol and it suggests that lattice self-diffusion is the rate controlling mechanism.
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Citations
Citations to this article as recorded by  - High Temperature Deformation and Microstructural Evolution of Homogenized AA 2026 Alloy
HyeonWoo Kang, SooBin Kim, ByoungLok Jang, HeeKook Kim
Korean Journal of Metals and Materials.2023; 61(5): 338. CrossRef - Hot Deformation Behavior and Microstructural Evolution of Powder Metallurgy Ti-6Al-4V Alloy
Youngmoo Kim, Young-Beom Song, Sung Ho Lee, Young-Sam Kwon
Journal of Korean Powder Metallurgy Institute.2014; 21(4): 277. CrossRef
- A Study on Manufacture of Spraying Powder for BSCCO Superconductor Formation by Plasma Spray
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Jeong-Sik Park, Chang-Eun Cho, Kyung-Chae Park
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J Korean Powder Metall Inst. 2008;15(6):477-481.
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DOI: https://doi.org/10.4150/KPMI.2008.15.6.477
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Abstract
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- Formation and characteristics of spraying powder for BSCCO High-Tc superconductor prepared by plasma spray coating were investigated. The addition of 3% of binder gives the best flowability of the powder. Ball milling for 30h and 35h gives the best flowability of powder in the case of 2001 and 0212, respectively. The withdraw ratio increases upon binder addition from 12 to 27% in the case of 2001 and from 18 to 31% in the case of 0212 for sieving powder of 30-90µm in size. The built-up efficiency for 100µm thickness of spray coating is increased more than 30% by binder addition. The microstructure of the spray coated layers was investigated by XRD and EDS analysis.
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