Corrosion-fatigue under rainwater of a q&t steel: Experiments and probabilistic description

F. Moretti, S. Beretta, A. Lo Conte, D. Straub

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations

Abstract

Corrosion-fatigue is one of the key failure modes of railway axles. We show the results of a series of corrosion-fatigue experiments under rainwater with a Q&T steel adopted for manufacturing railway axles. The process can be divided into the following phases by: i) an early formation of pits followed by ii) a pit- To-crack transition at approximately 30μm diameter and iii) the growth of small cracks with a pronounced scatter. The variability of the different phases needs to be accurately described for achieving a realistic life prediction and a good comparison with full-scale experiments.

Original languageEnglish
Pages (from-to)12-17
Number of pages6
JournalProcedia Engineering
Volume74
DOIs
StatePublished - 2014
Event17th International Colloquium on Mechanical Fatigue of Metals, ICMFM 2014 - Verbania, Italy
Duration: 25 Jun 201427 Jun 2014

Keywords

  • Corrosion-fatigue
  • EA4T
  • Probabilistic model
  • Railway axles

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