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 language | English |
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Pages (from-to) | 189-196 |
Number of pages | 8 |
Journal | Computational Materials Science |
Volume | 26 |
Issue number | SUPPL. |
DOIs | |
State | Published - Jan 2003 |
Event | 11th International Workshop on Computational Mechanics of Mat. - Freiberg, Germany Duration: 24 Sep 2001 → 25 Sep 2001 |
Keywords
- Back stress
- Finite element analysis
- Martensitic transformation
- Shape memory alloy
- TRIP-steel