Influence of strain on precipitation reactions during creep of an advanced 9% chromium steel

被引：73

作者：

Hättestrand, M ^{[1
]}

Andrén, HO ^{[1
]}

机构：

[1] Chalmers, Dept Expt Phys, SE-41296 Gothenburg, Sweden

来源：

ACTA MATERIALIA | 2001年 / 49卷 / 12期

关键词：

transmission electron microscopy (TEM); atom probe; martensitic steel; creep;

D O I：

10.1016/S1359-6454(01)00135-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Creep tested samples of the 9% chromium steel P92, were investigated using energy filtered transmission electron microscopy (EFTEM) and atom probe held ion microscopy (APFIM). The mean size and the volume fraction of precipitates of type M(23)C(6). VN and Laves phase as a function of creep time and temperature were determined. A comparison with isothermally aged material showed that coarsening of M(23)C(6) carbides is accelerated by the strain, while the effect of strain on VN precipitates is insignificant. it was also found that the number density of Laves phase particles is higher in creep tested material compared to isothermally aged material. Possible mechanisms to explain these observations are discussed. (C) 2001 Acta Materiala Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：2123 / 2128

页数：6

共 20 条

[1] PERFORMANCE OF AN ENERGY COMPENSATOR WITH A LARGE ACCEPTANCE ANGLE [J].

ANDREN, HO .

JOURNAL DE PHYSIQUE, 1986, 47 (C-7) :483-488

[2]

ANDREN HO, 1979, SCAND J METALL, V8, P147

[3] THE EFFECT OF LONG-TERM CREEP ON PARTICLE COARSENING IN TEMPERED MARTENSITE FERRITIC STEELS [J].

EGGELER, G .

ACTA METALLURGICA, 1989, 37 (12) :3225-3234

[4] Metallurgy and creep properties of new 9-12%Cr steels [J].

Hald, J .

STEEL RESEARCH, 1996, 67 (09) :369-374

[5]

Hald J, 1999, MICRO HIGH TEMP MAT, P1

[6]

Hald J., 1998, MAT ADV POWER ENG 19, P155

[7] Microanalysis of two creep resistant 9-12% chromium steels [J].

Hattestrand, M ;

Schwind, M ;

Andren, HO .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 250 (01) :27-36

[8]

HATTESTRAND M, IN PRESS MICRON

[9]

HENES D, 1997, 20 VDEH, V20, P42

[10] Quantification of precipitates in advanced creep resistant 9-12% Cr steels [J].

Hofer, P ;

Cerjak, H ;

Schaffernak, B ;

Warbichler, P .

STEEL RESEARCH, 1998, 69 (08) :343-348

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