Low-cycle fatigue of an aluminum alloy plated with multi-layered deposits

Ya B. Unigovski, A. Grinberg, E. Gerafi, E. M. Gutman, S. Moisa

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Low-cycle fatigue (LCF) in engineering structures is caused by a relatively low-frequency strain cycling or thermal cycling. Regardless of the fact that it is much more dangerous than high-cycle fatigue, it has not been studied enough. Coated aluminum alloys are widely used in aerospace and transportation industries, mostly because of their high toughness and strength-weight ratio and improved surface properties. The effect of one-, two- and three-layer coatings, including an inner electroless nickel layer and, additionally, electrodeposited nickel, gold and silver, on the LCF behavior of 1.6-mm-thick 6061-T6 Al alloy was studied in a strain-controlled purely bending mode. The lifetime of the coated alloy drastically decreases as compared to the substrate. The incipient cracks were revealed, first of all, in the electroless nickel layer and in the substrate close to its surface.

Original languageEnglish
Pages (from-to)863-868
Number of pages6
JournalJournal of Optoelectronics and Advanced Materials
Issue number7-8
StatePublished - 1 Jan 2013


  • Coated aluminum alloy
  • Deposit thickness
  • Low-cycle fatigue

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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