Study of carbide transformations during high-temperature oxidation of nickel-base superalloys

被引：27

作者：

Berthod, P ^{[1
]}

Vébert, C ^{[1
]}

Aranda, L ^{[1
]}

Podor, R ^{[1
]}

Rapin, C ^{[1
]}

机构：

[1] Univ Nancy 1, Lab Chim Solide Mineral, UMR 7555, F-54506 Vandoeuvre Les Nancy, France

来源：

OXIDATION OF METALS | 2005年 / 63卷 / 1-2期

关键词：

nickel alloys; carbides; high-temperature oxidation; carbon; thermodynamic calculations;

D O I：

10.1007/s11085-005-1951-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Microstructure phenomena resulting from high-temperature oxidation of three nickel-base superalloys were studied by microstructure examinations. Disappearance, nature modification, volume fraction evolution or precipitation of carbides were observed in the alloys near the external surface, depending on the temperature and the chemical composition of the alloys. Thermodynamic calculations allowed to better know what happened to carbon and to quantify its new distribution. The alloys studied lost a more or less great part of their sub-surface carbon content at 1200degreesC while carbon seemingly diffused deeper in the alloy at 1100degreesC and 1000degreesC. The latter part of carbon promoted the coarsening of the pre-existing carbides, some modifications of their natures or the precipitation of new carbides in the matrix, then the occurrence of a new-carbides zone.

引用

页码：57 / 72

页数：16

共 12 条

[1]

[Anonymous], 1976, HDB CHEM PHYS

[2] Thermodynamic calculations for studying high temperature oxidation of superalloys [J].

Berthod, P ;

Michon, S ;

Di Martino, J ;

Mathieu, S ;

Noël, S ;

Podor, R ;

Rapin, C .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2003, 27 (03) :279-288

[3]

BRADLEY EF, 1988, SUPERALLOYS

[4] Factors affecting chromium carbide precipitate dissolution during alloy oxidation [J].

Durham, RN ;

Gleeson, B ;

Young, DJ .

OXIDATION OF METALS, 1998, 50 (1-2) :139-165

[5] THE EFFECT OF SELECTIVE OXIDATION OF CHROMIUM ON THE CREEP STRENGTH OF ALLOY-617 [J].

ENNIS, PJ ;

QUADAKKERS, WJ ;

SCHUSTER, H .

JOURNAL DE PHYSIQUE IV, 1993, 3 (C9) :979-986

[6] Microstructure of HK40 alloy after high-temperature service in oxidizing/carburizing environment - II. Carburization and carbide transformations [J].

Kaya, AA .

MATERIALS CHARACTERIZATION, 2002, 49 (01) :23-34

[7]

Kofstad P., 1988, Elsevier Appl. Sci., V24, DOI [10.1002/crat.2170240408, DOI 10.1002/CRAT.2170240408]

[8] Application of thermodynamic calculations to study high temperature behavior of TaC-strengthened Co-base superalloys [J].

Michon, S ;

Berthod, P ;

Aranda, L ;

Rapin, C ;

Podor, R ;

Steinmetz, P .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2003, 27 (03) :289-294

[9]

*SGTE, 1992, SCI GROUP THERM EUR

[10]

Sims C.T., 1972, The Superalloys

← 1 2 →