Creep induced evolution of internal stresses and structure in a single crystal nickel-base superalloy

被引：0

作者：

Brückner, U ^{[1
]}

Epishin, A

Link, T

Portella, P

机构：

[1] BAM, Fed Inst Mat Res & Testing, DE-12205 Berlin, Germany

[2] Russian Acad Aviat Mat, RU-107005 Moscow, Russia

[3] Tech Univ Berlin, DE-10623 Berlin, Germany

来源：

ECRS 5: PROCEEDINGS OF THE FIFTH EUROPEAN CONFERENCE ON RESIDUAL STRESSES | 2000年 / 347-3卷

关键词：

creep; dendrite; misfit; segregation; superalloys;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Changes in the structure of single-crystal (SC) superalloy SRR99 during creep at 980 degreesC and 200 MPa were investigated. Geometrical. parameters of the gamma/gamma ' -microstructure, gamma/gamma ' -misfit, stresses in the phases and local misorientation of the structure were determined at defined points of the dendritic structure by use of X-ray diffraction (XRD), wavelength dispersive X-ray spectroscopy (WDXS), scanning (SEM) and transmission (TEM) electron microscopy. Correlation of the microstructural period and local misorientation of the structure with creep strain were found.

引用

页码：363 / 367

页数：5

共 7 条

[1] The influence of the dendritic structure on the γ/γ′-lattice misfit in the single-crystal nickel-base super-alloy CMSX-4 [J].

Bruckner, U ;

Epishin, A ;

Link, T ;

Dressel, K .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 247 (1-2) :23-31

[2] Local X-ray diffraction analysis of the structure of dendrites in single-crystal nickel-base superalloys [J].

Bruckner, U ;

Epishin, A ;

Link, T .

ACTA MATERIALIA, 1997, 45 (12) :5223-5231

[3]

EPISHIN A, IN PRESS

[4] Moire fringes for misfit measurements at incoherent γ/γ′ interfaces of nickel-base superalloys [J].

Link, T ;

Epishin, A ;

Bruckner, U .

SCRIPTA MATERIALIA, 1998, 39 (10) :1463-1469

[5]

Link T., 1999, Materialovedenie, P32

[6]

LINK T, IN PRESS ACTA MAT

[7] DIFFUSIONAL MECHANISM OF GAMMA'-PHASE PARTICLES COALESCENCE IN SINGLE-CRYSTALS OF NICKEL-BASE SUPERALLOYS [J].

SVETLOV, IL ;

GOLOVKO, BA ;

EPISHIN, AI ;

ABALAKIN, NP .

SCRIPTA METALLURGICA ET MATERIALIA, 1992, 26 (09) :1353-1358

← 1 →