Resistance of grain boundaries to fatigue crack growth in high strength Al alloys

T. Zhai, J. C. Li, X. P. Jiang, G. H. Bray

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Resistance to short fatigue crack growth across grain boundaries was identified to be due to twist and tilt of crack plane deflection across the boundaries in some Al-Li and Al-Cu alloys. It counted for the commonly observed anomalous behaviors of short fatigue crack growth across grain boundaries. It could be explained why a finer layered grain structure with a strong β fiber texture exhibited faster growth rate of a fatigue crack than that in a coarse fibril grain structure of the same alloy. The grain orientation also had a strong effect on crack initiation and early growth in these alloys.

Original languageEnglish
Title of host publicationAdvances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008
Pages423-427
Number of pages5
StatePublished - 2008
EventAdvances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008 - Huangshan, China
Duration: Jun 3 2008Jun 8 2008

Publication series

NameAdvances in Heterogeneous Material Mechanics 2008 - Proceedings of the 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008

Conference

ConferenceAdvances in Heterogeneous Material Mechanics 2008 - 2nd International Conference on Heterogeneous Material Mechanics, ICHMM 2008
Country/TerritoryChina
CityHuangshan
Period6/3/086/8/08

Keywords

  • Al alloys
  • Crack deflection
  • Crack growth resistance
  • Crack plane twist and tilt
  • Texture effects

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Materials Chemistry

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