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ID 115402
著者
Terada, Yoshihiro Tokyo Institute of Technology
Takeyama, Masao Tokyo Institute of Technology
キーワード
nickel-based alloy
gamma prime
morphology
lattice misfit
資料タイプ
学術雑誌論文
抄録
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.
掲載誌名
Materials Transactions
ISSN
13459678
13475320
cat書誌ID
AA1151294X
出版者
The Japan Institute of Metals and Materials
58
5
開始ページ
817
終了ページ
824
発行日
2017-04-25
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
出版社版
部局
理工学系