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| COMPOSITION DESIGN AND EXPERIMENTAL STUDY OF SINGLE CRYSTAL ALLOY DD3 |
| by WU Zhongtang; WEN Zhongyuan; CHEN Dehou (Institute of Aeronautical Materials; Beijing) (Manuscript received 19 June; 1985; revised manuscript 27 January; 1986) |
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Cite this article:
by WU Zhongtang; WEN Zhongyuan; CHEN Dehou (Institute of Aeronautical Materials; Beijing) (Manuscript received 19 June; 1985; revised manuscript 27 January; 1986). COMPOSITION DESIGN AND EXPERIMENTAL STUDY OF SINGLE CRYSTAL ALLOY DD3. Acta Metall Sin, 1987, 23(4): 349-356.
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Abstract Orthogonal design calculation of the composition of single crystal has been carried out using the method proposed by Watanabe. The effects of individual elements on the volume fraction of γ' phase, the electron vacancy number and the lattice parameters of γ and γ' phase as well as the lattice misfit between γ matrix and γ' precipitate have been predicted. Based on the calculation, the dependance of composition on microstructure and mechanical properties has been proposed and compared with experimental results. The composition designed by present provides about 60% of volume fraction of γ' in the alloy, good structural tability excellent high temperature mechanical properties were obtained.
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Received: 18 April 1987
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