Spinodal Decomposition Mechanism of γ′ Precipitation in a Single Crystal Ni-Based Superalloy

被引：0
|
作者：
X.P. Tan
D. Mangelinck
C. Perrin-Pellegrino
L. Rougier
Ch.-A. Gandin
A. Jacot
D. Ponsen
V. Jaquet
机构：
[1] IM2NP,School of Mechanical and Aerospace Engineering
[2] UMR 7334 CNRS,undefined
[3] Université Aix-Marseille,undefined
[4] LSMX,undefined
[5] MXG,undefined
[6] Ecole Polytechnique Fédérale de Lausanne,undefined
[7] CEMEF,undefined
[8] UMR 7635 CNRS,undefined
[9] Mines Paristech,undefined
[10] Snecma-SAFRAN Group,undefined
[11] Service YQGC,undefined
[12] Nanyang Technological University,undefined
来源：
Metallurgical and Materials Transactions A | 2014年 / 45卷
关键词：
Cool Rate; Spinodal Decomposition; Atom Probe Tomography; Free Energy Curve; Furnace Cool Rate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The precipitation of γ′ phase in a commercial single crystal Ni-based superalloy with different cooling rates has been investigated by atom probe tomography. Numerous irregular interconnected γ′ precipitates in the size range of ~30 to 50 nm were obtained even utilizing the fastest possible cooling rate. Diffuse γ/γ′ interface and far from equilibrium composition of γ′ phase were observed in the fast-cooled sample, suggesting that γ′ precipitation occurs via a spinodal decomposition at the very early stage.
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页码：4725 / 4730
页数：5
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