SPECIAL TOPIC—Magnetism, magnetic materials, and interdisciplinary research |
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Electronic structure & yield strength prediction for dislocation–Mo complex in the γ phase of nickel-based superalloys |
Feng-Hua Liu(刘凤华)1, Chong-Yu Wang(王崇愚)1,2 |
1 Central Iron and Steel Research Institute, Beijing 100081, China;
2 Department of Physics, Tsinghua University, Beijing 100084, China |
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Abstract Molybenum's effects when added in the γ phase of nickel-based superalloys were studied using the lattice Green's function multiscale method. The electronic structure of the dislocation–Mo complex was analyzed and hybridization was found to contribute to the strengthening. Moreover, by combining the interaction energies calculated from two scales, the yield stress was theoretically predicted at 0 K and finite temperature.
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Received: 08 May 2017
Revised: 08 June 2017
Accepted manuscript online:
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PACS:
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61.72.Yx
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(Interaction between different crystal defects; gettering effect)
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61.82.Bg
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(Metals and alloys)
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71.15.Mb
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(Density functional theory, local density approximation, gradient and other corrections)
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Fund: Project supported by Beijing Municipality Science&Technology Commission,China (Grant No.D161100002416001). |
Corresponding Authors:
Chong-Yu Wang
E-mail: cywang@mail.tsinghua.edu.cn
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Cite this article:
Feng-Hua Liu(刘凤华), Chong-Yu Wang(王崇愚) Electronic structure & yield strength prediction for dislocation–Mo complex in the γ phase of nickel-based superalloys 2017 Chin. Phys. B 26 076104
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