Results of a systematic study are presented to review various effects of crystal size on the
martensitic phase transformations in nanocrystalline NiTi shape memory alloys. The …

Abstract Development of nanoscale actuators and sensors in recent years calls for functional
materials with small dimensions and high strengths. High strength nanocrystalline NiTi …

Two competing mechanisms that compensate the transformation strains of the martensite
are observed by transmission electron microscopy studies of nanocrystalline NiTi alloys. A …

Nanocrystalline NiTi alloys were processed by devitrification of an amorphous phase to
elucidate the impact of the nanocrystallinity on the thermally induced martensitic phase …

The martensitic phase transformation of nanocrystalline NiTi causes a unique “herring-bone”
microstructure of B19′ not encountered in the coarse grains. The constraints of the grain …

The amorphous phase with the retained nanocrystalline phase, the deformation bands and
the amorphous bands coexist due to inhomogeneous plastic deformation in nickel–titanium …

We focus on the effects of ultrafine grains on the thermomechanical cyclic stability of
martensitic phase transformation in Ni49. 7Ti50. 3 shape memory alloy fabricated using …

Functional behavior of nanocrystalline NiTi shape memory wires having various austenitic
microstructures was investigated by thermomechanical testing and TEM analysis of …

Atomistic simulations are performed to study the structure and geometrical limit of nanoscale
twins in NiTi shape memory alloys. We analyze compound twins as narrow as∼ 1 nm …

In near equiatomic NiTi alloys, the reversible thermoelastic transformation between B2-
structured austenite phase and the R-phase is attracting increasing interest for practical …