Crack growth behavior of ferritic steel for USC boilers in pressurized superheated steam

Masahiro Inuil; Yutaka Watanabe; Tatsuo Kondo; Koshi Suzuki; Kimio Kano

doi:10.1179/mht.2001.013

Crack growth behavior of ferritic steel for USC boilers in pressurized superheated steam

Masahiro Inuil, Yutaka Watanabe, Tatsuo Kondo, Koshi Suzuki, Kimio Kano

ENG - Quantum Science and Energy Engineering

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

1 Citation (Scopus)

Abstract

In this study, effects of superheated steam on cyclic crack propagation behavior of a heat resistant steel were investigated. Crack propagation experiments were carried out on NF616 (9Cr-0.5Mo-2WVNb) in pressurized superheated steam (600°C/10MPa) under cyclic loading either with or without holding time at constant load. Superheated steam environment has two opposing effects on cyclic crack growth, acceleration and retardation. A modified tarnish rupture (TR) model has been proposed to explain the crack propagation behavior. The crack propagation rate estimated based on the TR-type model well agreed with the experimental data.

Original language	English
Pages (from-to)	119-124
Number of pages	6
Journal	Materials at High Temperatures
Volume	18
Issue number	2
DOIs	https://doi.org/10.1179/mht.2001.013
Publication status	Published - 2001

Keywords

Cyclic crack growth
Environmental effects
Ferritic steel
Pressurized superheated steam
Tarnish rupture model
USC boiler

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10.1179/mht.2001.013

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title = "Crack growth behavior of ferritic steel for USC boilers in pressurized superheated steam",

abstract = "In this study, effects of superheated steam on cyclic crack propagation behavior of a heat resistant steel were investigated. Crack propagation experiments were carried out on NF616 (9Cr-0.5Mo-2WVNb) in pressurized superheated steam (600°C/10MPa) under cyclic loading either with or without holding time at constant load. Superheated steam environment has two opposing effects on cyclic crack growth, acceleration and retardation. A modified tarnish rupture (TR) model has been proposed to explain the crack propagation behavior. The crack propagation rate estimated based on the TR-type model well agreed with the experimental data.",

keywords = "Cyclic crack growth, Environmental effects, Ferritic steel, Pressurized superheated steam, Tarnish rupture model, USC boiler",

author = "Masahiro Inuil and Yutaka Watanabe and Tatsuo Kondo and Koshi Suzuki and Kimio Kano",

year = "2001",

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T1 - Crack growth behavior of ferritic steel for USC boilers in pressurized superheated steam

AU - Inuil, Masahiro

AU - Watanabe, Yutaka

AU - Kondo, Tatsuo

AU - Suzuki, Koshi

AU - Kano, Kimio

PY - 2001

Y1 - 2001

N2 - In this study, effects of superheated steam on cyclic crack propagation behavior of a heat resistant steel were investigated. Crack propagation experiments were carried out on NF616 (9Cr-0.5Mo-2WVNb) in pressurized superheated steam (600°C/10MPa) under cyclic loading either with or without holding time at constant load. Superheated steam environment has two opposing effects on cyclic crack growth, acceleration and retardation. A modified tarnish rupture (TR) model has been proposed to explain the crack propagation behavior. The crack propagation rate estimated based on the TR-type model well agreed with the experimental data.

AB - In this study, effects of superheated steam on cyclic crack propagation behavior of a heat resistant steel were investigated. Crack propagation experiments were carried out on NF616 (9Cr-0.5Mo-2WVNb) in pressurized superheated steam (600°C/10MPa) under cyclic loading either with or without holding time at constant load. Superheated steam environment has two opposing effects on cyclic crack growth, acceleration and retardation. A modified tarnish rupture (TR) model has been proposed to explain the crack propagation behavior. The crack propagation rate estimated based on the TR-type model well agreed with the experimental data.

KW - Cyclic crack growth

KW - Environmental effects

KW - Ferritic steel

KW - Pressurized superheated steam

KW - Tarnish rupture model

KW - USC boiler

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DO - 10.1179/mht.2001.013

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EP - 124

JO - Materials at High Temperatures

JF - Materials at High Temperatures

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ER -

Crack growth behavior of ferritic steel for USC boilers in pressurized superheated steam

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