Distribution of grain-boundary length and inclination of type 304 stainless steel and its effects on small crack initiation and growth under creep-fatigue conditions

Takayuki Kitamura, Naoya Tada, Yoshihide Kuriyama, Ryuichi Ohtani

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2 Citations (Scopus)

Abstract

In order to elucidate the microstructural effect on initiation and growth of intergranular small cracks under creep-fatigue conditions, we discuss the randomness of grain-boundary length and inclination. This study consists of the following investigations; (1) the length and inclination of grain boundaries of a stainless steel, SUS 304, are measured by means of image analysing system; (2) a numerical generation method of polycrystal grains is developed on the basis of an isotropic grain growth model; and (3) the crack length and inclination are measured by means of an image analysing system under creep-fatigue conditions. The results obtained from each investigation are summarized.

Original languageEnglish
Pages (from-to)702-707
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume56
Issue number524
Publication statusPublished - Apr 1990
Externally publishedYes

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Stainless Steel
Crack initiation
Crack propagation
Creep
Grain boundaries
Stainless steel
Fatigue of materials
Cracks
Polycrystals
Grain growth

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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T1 - Distribution of grain-boundary length and inclination of type 304 stainless steel and its effects on small crack initiation and growth under creep-fatigue conditions

AU - Kitamura, Takayuki

AU - Tada, Naoya

AU - Kuriyama, Yoshihide

AU - Ohtani, Ryuichi

PY - 1990/4

Y1 - 1990/4

N2 - In order to elucidate the microstructural effect on initiation and growth of intergranular small cracks under creep-fatigue conditions, we discuss the randomness of grain-boundary length and inclination. This study consists of the following investigations; (1) the length and inclination of grain boundaries of a stainless steel, SUS 304, are measured by means of image analysing system; (2) a numerical generation method of polycrystal grains is developed on the basis of an isotropic grain growth model; and (3) the crack length and inclination are measured by means of an image analysing system under creep-fatigue conditions. The results obtained from each investigation are summarized.

AB - In order to elucidate the microstructural effect on initiation and growth of intergranular small cracks under creep-fatigue conditions, we discuss the randomness of grain-boundary length and inclination. This study consists of the following investigations; (1) the length and inclination of grain boundaries of a stainless steel, SUS 304, are measured by means of image analysing system; (2) a numerical generation method of polycrystal grains is developed on the basis of an isotropic grain growth model; and (3) the crack length and inclination are measured by means of an image analysing system under creep-fatigue conditions. The results obtained from each investigation are summarized.

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