Multiscale modeling of sensory properties of Co–Ni–Al shape memory particles embedded in an Al metal matrix

Abstract

The concept of utilizing ferromagnetic shape memory alloys as embedded sensory particles in aluminum alloys for damage detection is discussed. When embedded in a material, a shape memory particle can undergo an acoustically detectable solid-state phase transformation when the local strain reaches a critical value. The emitted acoustic signal can be used for real-time damage detection. To study the transition behavior of the sensory particle inside a metal matrix under load, a simulation approach based on a coupled atomistic-continuum model is used. The simulation results indicate a strong dependence of the particle's pseudoelastic response on its crystallographic orientation with respect to the loading direction. These results serve as a basis for understanding the efficacy and variability in the sensory particle transformation to detect damage processes.

Disjoining potential and grain boundary premelting in binary alloys

“…We utilized the parallel MC code developed by V. Yamakov at NASA. 58,59 Two MC modes were implemented in this work: the semi-grand canonical ensemble and the composition-controlled algorithm.…”

Thermomechanical response of NiTi shape-memory nanoprecipitates in TiV alloys

“…Such a material design approach is considered promising to confer self-healing features to metallic alloys [7]. Alternative concepts involve acoustic or magnetic detection of the martensitic transformation of such embedded shapememory particles to facilitate damage detection [8,9].…”

Structure and Martensitic Transformation in Rapidly Solidified CoNiAlFe Alloy

“…In the past three decades, Housler based magnetic controlled shape memory alloys (MCMEA), such as Ni-Mn-Ga [1,2], Co-Ni-Ga [3,4], Ni-Fe-Ga [5,6], Ni-Mn-X (X = In, Sb, Al) [7,8], and Co-Ni-Al [9,10], have attracted much scientific attention as it concerns the sensors and actuators industry. These kinds of Housler alloys are characterized by the ability of creating a large magnetic field induced strain (MFIS) and their high response frequency under an external magnetic field (EMF) [11,12].…”

“…Additionally, recent studies [10,14,15] on Co-Ni-Al series alloys, revealed that a large output MFIS could be affected by two main parameters, including a suitable martensite structure and a large deformation drive force. As it concerns the first factor, the MFIS can be obtained due to the martensite twin boundaries rearrangement under EMF.…”