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

页码：1136 / 1142

页数：7

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