Oxidation of nickel-based single-crystal superalloys for industrial gas turbine applications

被引：283

作者：

Sato, A. ^{[1
]}

Chiu, Y-L ^{[1
]}

Reed, R. C. ^{[1
]}

机构：

[1] Univ Birmingham, Dept Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

ACTA MATERIALIA | 2011年 / 59卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

Nickel superalloys; Oxidation Oxides; Thermodynamics; Segregation; ALUMINA SCALES; ALLOYS; RESISTANCE; MECHANISM; BEHAVIOR; BARRIER;

D O I：

10.1016/j.actamat.2010.09.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation resistance of three prototype single-crystal nickel-based superalloys for industrial (electricity generating) gas turbine applications is studied All contain greater quantities of Cr than in most existing single-crystal superalloys, two are alloyed with Si All alloys are found to be marginal Al2O3-formers, with the performance being better at 1000 degrees C rather than 900 degrees C, and when Si is added Microstructural analysis indicates that the ability to form an Al2O3 layer is better in the interdendritic regions, the dendrite regions are prone to internal oxidation In all cases, an outer scale of Cr2O3 is formed which is in contact with either Ta2O5 (at 1000 degrees C) or NiTa2O6 (at 900 degrees C) To explain the results, the factors known to influence the rate of Al2O3 scale formation are considered A model is developed to predict whether any given alloy composition will form a continuous Al2O3 scale This is used to rationalize the dependence of Al2O3 scale formation on alloy composition in these systems It is useful for the purposes of alloy design (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved

引用

页码：225 / 240

页数：16

共 39 条

[1] On the oxidation of the third-generation single-crystal superalloy CMSX-10 [J].

Akhtar, A ;

Hook, MS ;

Reed, RC .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2005, 36A (11) :3001-3017

[2]

Birks N, 2006, INTRODUCTION TO THE HIGH-TEMPERATURE OXIDATION OF METALS, 2ND EDITION, P1, DOI 10.1017/CBO9781139163903

[3] FORMING CONTINUOUS ALUMINA SCALES TO PROTECT SUPERALLOYS [J].

BIRKS, N ;

MEIER, GH ;

PETTIT, FS .

JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 1994, 46 (12) :42-46

[4] Oxidation behavior of several chromia-forming commercial nickel-base superalloys [J].

Chen, JH ;

Rogers, PM ;

Little, JA .

OXIDATION OF METALS, 1997, 47 (5-6) :381-410

[5]

DEWIT JHW, 1981, J MATER EDUC, V3, P333

[6] A mechanism governing oxidation-assisted low-cycle fatigue of superalloys [J].

Evans, A. G. ;

He, M. Y. ;

Suzuki, A. ;

Gigliotti, M. ;

Hazel, B. ;

Pollock, T. M. .

ACTA MATERIALIA, 2009, 57 (10) :2969-2983

[7]

GLEESON B, 2008, MAT SCI TECHNOLOGY S, V19, P173

[8] THE ISOTHERMAL-OXIDATION BEHAVIOR OF SEVERAL NICKEL-BASE SINGLE-CRYSTAL SUPERALLOYS WITH AND WITHOUT COATINGS [J].

GOBEL, M ;

RAHMEL, A ;

SCHUTZE, M .

OXIDATION OF METALS, 1993, 39 (3-4) :231-261

[9] Corrosion kinetics of a directionally solidified Ni-base superalloy [J].

Gordon, Ali P. ;

Trexler, Matthew D. ;

Neu, Richard W. ;

Sanders, Thomas J. ;

McDowell, David L. .

ACTA MATERIALIA, 2007, 55 (10) :3375-3385

[10]

HASSELQVIST M, P 1 EUR C IN PRESS

← 1 2 3 4 →