Simulation of martensitic transformations in TRIP-steel and Fe-based shape memory alloy

F. Nishimura, U. Liedl, E. A. Werner

Research output: Contribution to journalConference articlepeer-review

14 Scopus citations

Abstract

Several important effects in the mechanical behavior of materials are due to martensitic transformations. In case of TRIP-steels, the γ → α′ martensitic transformation during plastic deformation is responsible for high strength combined with an outstanding ductility. Another martensitic transformation (γ → ε) is the reason for the perfect shape recovery in Fe-based shape memory alloys (SMAs). By means of a finite element analysis the evolution of martensite both in a TRIP-steel and in an Fe-based SMA is investigated. The model is able to explain the experimentally observed dependence of the austenite start temperature in an Fe-based SMA on the extent of prior martensitic transformation. Dilatometric experiments with an high-alloyed TRIP-steel are used to validate the predictions of the TRIP-simulations.

Original languageEnglish
Pages (from-to)189-196
Number of pages8
JournalComputational Materials Science
Volume26
Issue numberSUPPL.
DOIs
StatePublished - Jan 2003
Event11th International Workshop on Computational Mechanics of Mat. - Freiberg, Germany
Duration: 24 Sep 200125 Sep 2001

Keywords

  • Back stress
  • Finite element analysis
  • Martensitic transformation
  • Shape memory alloy
  • TRIP-steel

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