Quantitative study of W-alloyed 9-12 Cr steel microstructures using EBSD

V. A. Yardley; R. Sugiura; T. Matsuzaki; S. Tsurekawa; A. T. Yokobori; Y. Hasegawa

Quantitative study of W-alloyed 9-12 Cr steel microstructures using EBSD

V. A. Yardley, R. Sugiura, T. Matsuzaki, S. Tsurekawa, A. T. Yokobori, Y. Hasegawa

Research output: Contribution to journal › Article › peer-review

Abstract

Ferritic/martensitic steels for use in power generation, such as the modified 9-12 wt% Cr alloy P92, are required to withstand temperatures of 450-600°C or more for several decades. Under such conditions, one major failure mode is creep fracture, so reliable prediction of the growth lifetime of creep cracks is important. Lifetimes depend on many factors including temperature, specimen geometry and material microstructure. In the present paper, electron backscatter diffraction (EBSD) is used to quantify the microstructural differences between two steel samples that performed very differently in creep crack growth tests despite similar compositions and preparation routes.

Original language	English
Pages (from-to)	39-52
Number of pages	14
Journal	Strength, Fracture and Complexity
Volume	5
Issue number	1
Publication status	Published - 2007 Dec 1

Keywords

Creep crack
Electron backscatter diffraction
Martensitic block
Martensitic packet
Martensitic steel
Orientation imaging
P92
Prior austenite grain

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Quantitative study of W-alloyed 9-12 Cr steel microstructures using EBSD",

abstract = "Ferritic/martensitic steels for use in power generation, such as the modified 9-12 wt% Cr alloy P92, are required to withstand temperatures of 450-600°C or more for several decades. Under such conditions, one major failure mode is creep fracture, so reliable prediction of the growth lifetime of creep cracks is important. Lifetimes depend on many factors including temperature, specimen geometry and material microstructure. In the present paper, electron backscatter diffraction (EBSD) is used to quantify the microstructural differences between two steel samples that performed very differently in creep crack growth tests despite similar compositions and preparation routes.",

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TY - JOUR

T1 - Quantitative study of W-alloyed 9-12 Cr steel microstructures using EBSD

AU - Yardley, V. A.

AU - Sugiura, R.

AU - Matsuzaki, T.

AU - Tsurekawa, S.

AU - Yokobori, A. T.

AU - Hasegawa, Y.

PY - 2007/12/1

Y1 - 2007/12/1

N2 - Ferritic/martensitic steels for use in power generation, such as the modified 9-12 wt% Cr alloy P92, are required to withstand temperatures of 450-600°C or more for several decades. Under such conditions, one major failure mode is creep fracture, so reliable prediction of the growth lifetime of creep cracks is important. Lifetimes depend on many factors including temperature, specimen geometry and material microstructure. In the present paper, electron backscatter diffraction (EBSD) is used to quantify the microstructural differences between two steel samples that performed very differently in creep crack growth tests despite similar compositions and preparation routes.

AB - Ferritic/martensitic steels for use in power generation, such as the modified 9-12 wt% Cr alloy P92, are required to withstand temperatures of 450-600°C or more for several decades. Under such conditions, one major failure mode is creep fracture, so reliable prediction of the growth lifetime of creep cracks is important. Lifetimes depend on many factors including temperature, specimen geometry and material microstructure. In the present paper, electron backscatter diffraction (EBSD) is used to quantify the microstructural differences between two steel samples that performed very differently in creep crack growth tests despite similar compositions and preparation routes.

KW - Creep crack

KW - Electron backscatter diffraction

KW - Martensitic block

KW - Martensitic packet

KW - Martensitic steel

KW - Orientation imaging

KW - P92

KW - Prior austenite grain

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Quantitative study of W-alloyed 9-12 Cr steel microstructures using EBSD

Abstract

Keywords

ASJC Scopus subject areas

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