Creep Damage and Creep Crack Growth Behavior in Cr-Mo-V Steel

Toshimitsu Yokobori; Tetsuo Nishihara; Toshiaki Yamaoku; Takeo Yokobori

doi:10.1299/kikaia.57.1522

Creep Damage and Creep Crack Growth Behavior in Cr-Mo-V Steel

Toshimitsu Yokobori, Tetsuo Nishihara, Toshiaki Yamaoku, Takeo Yokobori

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

Abstract

In this paper the substantial meaning of C* parameter was clarified. And it was found that C* parameter does not relate to the local stress field but creep elongation rate. Also creep damage was found to be a concentrated region of micro cracking along the grain boundary and to be represented by one characteristic curve independent on gross stress, temperature, shapes of notch against the nondimensional time controlled by creep rupture life. Creep crack growth rate was influenced by creep damage and it was due to the accumulated creep damage before creep crack initiation, which was mainly influenced by the effect of notch shape.

Original language	English
Pages (from-to)	1522-1527
Number of pages	6
Journal	Transactions of the Japan Society of Mechanical Engineers Series A
Volume	57
Issue number	539
DOIs	https://doi.org/10.1299/kikaia.57.1522
State	Published - 1991
Externally published	Yes

Keywords

C* parameter
Cr-Mo-V Steel
Crack Initiation
Creep Crack Propagation
Damage Mechanics
Notch Opening Displacement

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10.1299/kikaia.57.1522

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title = "Creep Damage and Creep Crack Growth Behavior in Cr-Mo-V Steel",

abstract = "In this paper the substantial meaning of C* parameter was clarified. And it was found that C* parameter does not relate to the local stress field but creep elongation rate. Also creep damage was found to be a concentrated region of micro cracking along the grain boundary and to be represented by one characteristic curve independent on gross stress, temperature, shapes of notch against the nondimensional time controlled by creep rupture life. Creep crack growth rate was influenced by creep damage and it was due to the accumulated creep damage before creep crack initiation, which was mainly influenced by the effect of notch shape.",

keywords = "C* parameter, Cr-Mo-V Steel, Crack Initiation, Creep Crack Propagation, Damage Mechanics, Notch Opening Displacement",

author = "Toshimitsu Yokobori and Tetsuo Nishihara and Toshiaki Yamaoku and Takeo Yokobori",

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AU - Nishihara, Tetsuo

AU - Yamaoku, Toshiaki

AU - Yokobori, Takeo

PY - 1991

Y1 - 1991

N2 - In this paper the substantial meaning of C* parameter was clarified. And it was found that C* parameter does not relate to the local stress field but creep elongation rate. Also creep damage was found to be a concentrated region of micro cracking along the grain boundary and to be represented by one characteristic curve independent on gross stress, temperature, shapes of notch against the nondimensional time controlled by creep rupture life. Creep crack growth rate was influenced by creep damage and it was due to the accumulated creep damage before creep crack initiation, which was mainly influenced by the effect of notch shape.

AB - In this paper the substantial meaning of C* parameter was clarified. And it was found that C* parameter does not relate to the local stress field but creep elongation rate. Also creep damage was found to be a concentrated region of micro cracking along the grain boundary and to be represented by one characteristic curve independent on gross stress, temperature, shapes of notch against the nondimensional time controlled by creep rupture life. Creep crack growth rate was influenced by creep damage and it was due to the accumulated creep damage before creep crack initiation, which was mainly influenced by the effect of notch shape.

KW - C parameter

KW - Cr-Mo-V Steel

KW - Crack Initiation

KW - Creep Crack Propagation

KW - Damage Mechanics

KW - Notch Opening Displacement

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M3 - 記事

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SN - 0387-5008

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SP - 1522

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JO - Transactions of the Japan Society of Mechanical Engineers Series A

JF - Transactions of the Japan Society of Mechanical Engineers Series A

IS - 539

ER -

Creep Damage and Creep Crack Growth Behavior in Cr-Mo-V Steel

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