Creep-fatigue intergranular fracture of inner cracking type in type 304 stainless steel difference from surface cracking type

Weisheng Zhou, Ryuichi Ohtani, Naoya Tada, Naoya Tada, Akira Kosaka

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Creep-fatigue tests of a Type 304 stainless steel are conducted and cracking behavior is observed. The results obtained are summarized as follows; Intergranular fracture under creep-fatigue conditions at high temperatures is classified into inner cracking type and surface cracking one. The crack initiation inside of a specimen in the former type is caused by the growth and coalescence of grain boundary diffusive cavities and the fracture is brought about by the coalescence of distributed small cracks at the final stage of life. On the other hand, the cracks at the surface in the latter type is attributed to the grain boundary sliding and the fracture is caused by the growth of surface small cracks. The inner cracks tend to appear at lower tensile strain rate, at higher compressive strain rate, and at higher temperature. A fracture mechanism map is proposed on the basis of the experimental observation.

Original languageEnglish
Pages (from-to)78-83
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
Coalescence
coalescing
strain rate
Strain rate
grain boundaries
Grain boundary sliding
fatigue tests
Tensile strain
crack initiation
Crack initiation
sliding
Grain boundaries
Temperature

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 difference from surface cracking type. / Zhou, Weisheng; Ohtani, Ryuichi; Tada, Naoya; Tada, Naoya; Kosaka, Akira.

In: Zairyo/Journal of the Society of Materials Science, Japan, Vol. 44, No. 496, 01.1995, p. 78-83.

Research output: Contribution to journalArticle

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