Creep-fatigue intergranular fracture of inner cracking type in type 304 stainless steel numerical simulation on initiation and growth of small cracks

Naoya Tada, Weisheng Zhou, Takayuki Kitamura, Ryuichi Ohtani

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The most dangerous fracture of creep-fatigue is caused by multiple small cracks which initiate and grow inside of materials. In this study, a numerical simulation method is proposed on the initiation and growth of inner small cracks on the basis of the experimental observation of a Type 304 stainless steel during creep-fatigue in order to elucidate the evolution process of damage. The model proposed in this study is similar to that for creep-fatigue intergranular fracture of surface cracking type which has already been reported by the authors. It is based on a discrete model of grain boundaries having random shape and sizes with random fracture resistances and a Monte Carlo simulation combined with a damage mechanics concept. As a result, the spatial and temporal distributions of inner small cracks are successfully evaluated by the simulation.

Original languageEnglish
Pages (from-to)84-89
Number of pages6
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume44
Issue number496
Publication statusPublished - Jan 1995
Externally publishedYes

Fingerprint

Stainless Steel
stainless steels
Creep
Stainless steel
cracks
Fatigue of materials
Cracks
Computer simulation
damage
temporal distribution
simulation
fracture strength
Fracture toughness
Mechanics
spatial distribution
Grain boundaries
grain boundaries

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Metals and Alloys
  • Polymers and Plastics

Cite this

Creep-fatigue intergranular fracture of inner cracking type in type 304 stainless steel numerical simulation on initiation and growth of small cracks. / Tada, Naoya; Zhou, Weisheng; Kitamura, Takayuki; Ohtani, Ryuichi.

In: Zairyo/Journal of the Society of Materials Science, Japan, Vol. 44, No. 496, 01.1995, p. 84-89.

Research output: Contribution to journalArticle

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