Variation of fractographic appearance for different microstructures in welded joints having the same fatigue crack propagation properties

C. Masuda, H. Sumiyoshi, M. Kosuge, A. Ohta, S. Nishijima

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Fatigue fracture surfaces were examined with a scanning electron microscope to investigate the influence of the different microstructure between weld metal and heat affected zone. The specimens were centre-cracked type transverse butt welded joints. The relationship between macroscopic fatigue crack propagation rate and the stress intensity factor range is the same in spite of the difference in microstructure for both materials. It is shown that the fractographic appearance changes with microstructure even in the very low growth rate region near fatigue threshold. This suggests that fractographic appearance is not necessarily a guide to the rate of fatigue crack growth.

Original languageEnglish
Pages (from-to)233-237
Number of pages5
JournalInternational Journal of Fatigue
Volume9
Issue number4
DOIs
Publication statusPublished - 1987
Externally publishedYes

Fingerprint

Fatigue Crack Propagation
Welded Joints
Fatigue crack propagation
Microstructure
Welds
Fatigue
Fatigue of materials
Heat Affected Zone
Fatigue Crack Growth
Scanning Electron Microscope
Heat affected zone
Stress Intensity Factor
Stress intensity factors
Transverse
Electron microscopes
Metals
Scanning
Range of data

Keywords

  • fatigue
  • fatigue crack propagation
  • fractographic appearance
  • microstructure
  • stress intensity factor

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Variation of fractographic appearance for different microstructures in welded joints having the same fatigue crack propagation properties. / Masuda, C.; Sumiyoshi, H.; Kosuge, M.; Ohta, A.; Nishijima, S.

In: International Journal of Fatigue, Vol. 9, No. 4, 1987, p. 233-237.

Research output: Contribution to journalArticle

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