Evolution of the γ/γ′ microstructure during high-temperature creep of a nickel-base superalloy

被引：66

作者：

Epishin, A

Link, T ^{[1
]}

Portella, PD

Brückner, U

机构：

[1] Tech Univ Berlin, D-10623 Berlin, Germany

[2] Russian Inst Aviat Mat, Moscow 107005, Russia

[3] Bundesanstalt Mat Forsch & Prufung, D-12205 Berlin, Germany

来源：

ACTA MATERIALIA | 2000年 / 48卷 / 16期

关键词：

nickel alloys; creep; mesostructure; scanning electron microscopy (SEM); image analysis;

D O I：

10.1016/S1359-6454(00)00197-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The evolution of the gamma/gamma' microstructure of the superalloy SRR99 during creep at 980 degreesC and 200 MPa has been characterised by Fourier analysis of scanning electron microscope images. Different kinetics of this process were found in the primary and secondary dendrite arms. Changes of the structure period and interface tilt are correlated with the accumulated creep strain. Possible mechanisms for the correlation of microstructural evolution and high-temperature creep deformation are discussed. (C) 2000 Elsevier Science Ltd. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：4169 / 4177

页数：9

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