Temperature dependence of lattice mismatch and γ′ volume fraction of a fourth-generation monocrystalline nickel-based superalloy

被引：17
作者：
Diologent, Frederic
Caron, Pierre
d'Almeida, Thierry
Chambreland, Sylvain
Jacques, Alain
Bastie, Pierre
机构：
[1] Off Natl Etud & Rech Aerosp, Chatillon, France
[2] ESRF, Grenoble, France
[3] Univ Rouen, F-76821 Mont St Aignan, France
[4] Ecole Mines, F-54042 Nancy, France
[5] Univ Grenoble 1, F-38402 St Martin Dheres, France
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2006年 / 97卷 / 08期
关键词：
superalloys; single crystal; X-ray diffraction; lattice misfit;
D O I：
10.3139/146.101350
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The strain distribution in a new generation nickel-based single crystal superalloy has been determined in the temperature range 293 K-1598 K. Measurements have been performed using diffraction of high energy synchrotron radiation (150 keV, lambda = 0.008 nm) to determine the variations with temperature of the gamma/gamma' lattice mismatch and of the gamma' volume fraction. The chemical segregation at the dendrite scale and the internal stress induce a large range of values for the lattice mismatch. The measurements of the,gamma' volume fraction determined by X-ray diffraction are in agreement with those obtained by atom probe tomography, image analysis or computation.
引用
收藏
页码：1136 / 1142
页数：7
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