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동의어 포함
The grain size and growth direction of a directionally solidified turbine blade were evaluated by
the initial nucleation condition at the start block of directional solidification. The initial nucleation condition
was controlled by inserting a Ni foil on the directional solidification plate of the directional solidification
furnace. Fine grains with good orientation were obtained in the faster cooling condition at the start block. The
nucleus number was compared with the cooling rate of the start block by electron back scattered diffraction
(EBSD). DSC (differential scanning calorimeter) analysis was performed to compare the melting point and
undercooling for nucleation of the coarse nuclei and fine nuclei of the start block. The faster cooling condition
at the start block showed more undercooling for nucleation and smaller size of nuclei which resulted in a fine
grain with good orientation in the directional turbine blade.| 번호 | 참고문헌 | 국회도서관 소장유무 |
|---|---|---|
| 1 | B. B. Seth, Superalloys 2000 (eds., T. M. Pollock et al.), p.3, TMS, Warrendale, PA (2000). | 미소장 |
| 2 | W. S. Walston et al., Superalloys 1996 (eds., R.D. Kissinger et al.), p.27, TMS, Warrendale, PA (1996). | 미소장 |
| 3 | Y. Nakagawa, Supealloys 2004 (eds., K.A. Green et al.), p.3, TMS, Warrendale, PA (2004). | 미소장 |
| 4 | F. L. Versnyder and R. W. Guard, Trans. ASM 52, 485 (1960). | 미소장 |
| 5 | P. Carter, D. C. Cox, C. A. Grandin, and R. C. Reed, Mater. Sci. Eng. A 280, 233 (2000). | 미소장 |
| 6 | S. M. Seo, I. S. Kim, J. H. Lee, C. Y. Jo, and K. Ogi, J. Kor. Inst. Met. & Mat. 44, 44 (2006). | 미소장 |
| 7 | B. Chalmers, Principles of Solidification, p.259, John Wiley & Sons Inc, NY USA (1964). | 미소장 |
| 8 | W. Kurz and D. J. Fisher, Fundamentals of Solidification, 3rd ed., p.24, Trans Tech. Publications, Switzerland (1989). | 미소장 |
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