Simulation of the shape memory effect in a NiTi nano model system

Details Simulation of the shape memory effect in a NiTi nano model system Simulation of the shape memory effect in a NiTi nano model system

2012-02-06

arxiv.org/abs/1202.1078v1

Physics

Condensed Matter

Materials Science

7 pages, 4 figures; accepted for publication in the "Journal of Alloys and Compounds"

Scientific paper

10.1016/j.jallcom.2012.01.095

The shape memory behavior of a NiTi nanoparticle is analyzed by molecular dynamics simulations. After a detailed description of the equilibrium structures of the used model potential, the multi variant martensitic ground state, which depends on the geometry of the particle, is discussed. Tensile load is applied, changing the variant configuration to a single domain state with a remanent strain after unloading. Heating the particle leads to a shape memory effect without a phase transition to the austenite, but by variant reorientation and twin boundary formation at a certain temperature. These processes are described by stress-strain and strain-temperature curves, together with a visualization of the microstructure of the nanoparticle. Results are presented for five different Ni concentrations in the vicinity of 50%, showing for example, that small deviations from this ideal composition can influence the critical temperature for shape recovery significantly.

Affiliated with

Also associated with

No associations

Rating

Simulation of the shape memory effect in a NiTi nano model system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Simulation of the shape memory effect in a NiTi nano model system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulation of the shape memory effect in a NiTi nano model system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-118094