The effects of anodization treatment on the microstructure and fatigue behavior of 7075-T73 aluminum alloy

Teng Shih Shih, Tin Hou Lee, Ying Jhe Jhou

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The fatigue behaviors of 7075-T73 alloy with/without anodization/sealing treatment were investigated in this study. The microstructure of different samples was analyzed by electron microscopy. As the experiments, the microstructure were observed from the anodized/sealed samples to indicate that precipitates trapped at subsurface near film/metal (f/m) interface would partly dissolved and the deformed matrix existed high fractions of high angle grain boundaries. The bare 7075-T73 alloy samples achieved fatigue strength of 225 MPa and the anodized/sealed samples enhanced their fatigue strength at 107 life cycles with 1020μm film thickness. The fractured anodized/sealed sample showed fine striation spacing than bare sample after subjected to low stress amplitude.

Original languageEnglish
Pages (from-to)1280-1285
Number of pages6
JournalMaterials Transactions
Volume55
Issue number8
DOIs
StatePublished - 2014

Keywords

  • 7075 aluminum alloy
  • Anodization treatment
  • Fatigue life
  • Microstructure

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