ID | 115402 |
Author |
Hisazawa, Hiromu
Tokyo Institute of Technology
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Terada, Yoshihiro
Tokyo Institute of Technology
Takeyama, Masao
Tokyo Institute of Technology
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Keywords | nickel-based alloy
gamma prime
morphology
lattice misfit
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Content Type |
Journal Article
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Description | The morphological evolution of γ′ precipitates and lattice misfit with isothermal aging were closely investigated in wrought Ni-based superalloy Inconel X-750. The γ′ morphology dramatically changes in terms of shape, distribution, coalescence and coherency at the γ/γ′ interface. These processes and their dependence on temperature are summarized as a γ′ morphology map together with a time–temperature–precipitation (TTP) diagram through quantifying relevant morphological parameters. The lattice misfit was measured by X-ray diffraction and is positive; it decreases from 0.6% at room temperature to 0.1% at the aging temperature. These results suggest that the morphological changes of the γ′ precipitates are attributable to very low lattice misfit, the interaction of the elastic field, the volume fraction of the precipitates and incoherence in γ/γ′ interface.
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Journal Title |
Materials Transactions
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ISSN | 13459678
13475320
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NCID | AA1151294X
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Publisher | The Japan Institute of Metals and Materials
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Volume | 58
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Issue | 5
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Start Page | 817
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End Page | 824
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Published Date | 2017-04-25
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EDB ID | |
DOI (Published Version) | |
URL ( Publisher's Version ) | |
FullText File | |
language |
eng
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TextVersion |
Publisher
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departments |
Science and Technology
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