Finite Element Analysis of Precipitation Effects on Ni-Rich NiTi Shape Memory Alloy Response

Abstract:

Thermomechanical properties of precipitated NiTi shape memory alloys are investigated using the finite element method. The precipitated material microstructure is explored using a representative volume element with embedded Ni4Ti3 precipitates. Features such as precipitate coherency and distribution of Ni within the matrix due to the precipitation process are individually explored and characterized. Changes in the material’s macroscopic thermomechanical response due to this precipitation are determined.

• Periodical: Materials Science Forum (Volume 792)
• Pages: 65-71
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.792.65
• Online since: August 2014
• Authors: Austin Cox*, Theocharis Baxevanis, Dimitris C. Lagoudas
• Keywords: Finite Element, Micromechanics, Ni-Depletion, Ni-Rich NiTi, Representative Volume Element (RVE), Shape Memory Alloy (SMA)

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