首页|The coarsening behavior of γ′ phases in Ni-Al binary model single crystal superalloy at 1000 °C
The coarsening behavior of γ′ phases in Ni-Al binary model single crystal superalloy at 1000 °C
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NSTL
Elsevier
? 2022 Elsevier B.V.Ex-situ and quasi in-situ thermal exposure experiments have been conducted to explore the coarsening behavior of γ′ phases in the Ni-Al binary model single crystal superalloy at 1000 °C. It is obtained in ex-situ experiments that the number density and volume fraction of γ′ phases decrease with the exposure time increasing, while the average size increases. The coarsening of γ′ phases in the width direction obeys the cubic law described by the LSW theory, while the average size change in length is much greater than that in width. In quasi in-situ experiments, it is observed that small γ′ phases shrink or dissolute, the large ones tend to grow up. The coalescence of γ′ phases is also observed, which induces a sharp increase in the length direction.
CoalescenceCoarseningLSW theoryNi-Al binary model single crystal superalloyQuasi in-situ thermal exposure
Ge L.、Zhang X.N.、Dong P.、Guo W.G.、Yuan Y.、Yu T.、Wang C.Y.、Liu C.P.、Zhang Z.
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Institute of Microstructure and Property of Advanced Materials Faculty of Materials and Manufacturing Beijing University of Technology
School of Physics Beihang University
Central Iron & Steel Research Institute
Institute of Applied Physics Chinese Academy of Sciences
Center of Electron Microscopy and State Key Laboratory of Silicon Materials Department of Materials Science and Engineering Zhejiang University
NSTL
Elsevier
