mechanism of crack branching in the fatigue crack growth path of 2324-t39 aluminium alloy

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ID: 226633
2016
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Abstract
The crack growth behavior in 2324-T39 aluminium alloy was experimentally investigated. Two types of crack branching were observed. The mechanism of an uncommon crack branching which results from the link up of secondary crack with the main crack was focused on. The crack paths were observed with optical microscope and in-situ SEM. Finite element crack tip simulation was performed to investigate the relationship between plastic zone size and the location of the secondary crack. Tests and analysis results indicate that the secondary crack initiates near the plastic zone boundary and from the subsurface. The mechanism of this kind crack branching relates to the interaction of grain size and plastic zone size.
Reference Key
songsong2016fratturamechanism Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Lu Songsong;Bao Rui;Zhang Ting;Fei Binjun
Journal applied catalysis
Year 2016
DOI
10.3221/IGF-ESIS.35.09
URL
http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_09.pdf
Keywords
fatigue crack growth 2324-t39 aluminium alloymechanical engineering and machinerystructural engineering (general)

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